Hydraulics & Pneumatics - Hydraulics & Pneumatics is the leading international technical resource for fluid power http://hydraulicspneumatics.com/rss.xml en Mining Drill Provides High Torque in Small Space http://hydraulicspneumatics.com/other-components/mining-drill-provides-high-torque-small-space <div class="field-byline"> Joe Pegg, Bosch Rexroth Group </div> <div class="field-deck"> The Redbore 30 boxhole drill gives access to hard-to-reach ore bodies. Its direct hydraulic drive makes it compact, light, and extremely powerful. </div> <div class="node-body article-body"> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"> <img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"> <a href="/datasheet/mining-drill-provides-high-torque-small-space-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Mines for precious metals usually consist of a series of horizontal tunnels cut in strategic locations, each chosen to extract the greatest amount of ore with the least amount of excavation. Often, however, large pockets of ore are located in a less accessible area well above a tunnel&mdash;an area called the back. It is usually not cost-effective to bore a separate tunnel to reach deposits in the vein, so a boxhole drill is brought in to bore upward into the back.</p> <p><img alt="Fig. 1" height="246" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Lead-Redpath.jpg" style="margin: 5px; float: left;" title="The Redbore 30 was designed specifically for rapid boxhole development. It is the lightest, most compact drill in the boxhole market. The drill’s energy-efficient power pack and operating console have been combined into one unit making this two-piece, compact drill extremely mobile. This high mobility gets the machine to work sites quickly, making it highly productive and efficient." width="369" />Boxhole drills come in a variety of sizes and designs, but the most useful ones are relatively small, yet powerful &mdash; characteristics that usually cannot co-exist. Nevertheless, &ldquo;compact&rdquo; and &ldquo;powerful&rdquo; define the Redbore 30 boxhole drill, designed and built by <a href="http://www.redpathmining.com" target="_blank">J.S. Redpath Ltd.</a>, North Bay, Ontario, Canada. Because the Redbore 30 is so compact, mine operators can forego the expense of drilling an auxiliary tunnel to reach the overhead body of ore.</p> <p>In spite of its small footprint, the Redbore 30 packs as much power and torque as its bulkier competitors. The difference is that the Redbore 30 uses a direct-drive hydraulic motor that transmits low-speed, high-torque power without the need for a planetary gearbox.</p> <h3>Direct Advantages</h3> <p>The Redbore 30 uses H&auml;gglunds CA 140-120 direct-drive hydraulic motor from Bosch Rexroth. Because the motor has a short axial length, it is an integral part of the vertical shaft drive of the boxhole drill. The CA 140-120 occupies little volume because it has no planetary gearbox, couplings, or foundations, which would otherwise consume additional space. In addition, the motor is designed and constructed to withstand the high shock loading inherent to this application.</p> <p>Depending on the application and conditions, the Redbore 30 can drill directly to the ore pocket or first drill a pilot hole, followed by reaming. In either case, the rotary drive operates at variable speed up to only 15 rpm and operating torque of 20,000 lb-ft (27.1 kN-m). Maximum torque is 22,000 lb-ft (29.8 kN-m), and operating pressure is 3,000 psi (20,670 kPa). Hydraulic cylinders also operate at pressure to 3,000 psi to provide up to 100,000 lb (444 kN) of thrust to power the drive upward.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/combining-functions-saves-time-cuts-cost-improves-quality">Combining Functions Saves Time, Cuts Cost, Improves Quality</a></p> <p><a href="http://hydraulicspneumatics.com/blog/big-troubleshooting-secret-principles-methods">A BIG Troubleshooting Secret: Principles Before Methods</a></p> <p><a href="http://hydraulicspneumatics.com/blog/how-determine-hydraulic-pump-condition-using-volumetric-efficiency">How To Determine Hydraulic Pump Condition Using Volumetric Efficiency</a></p> </div> <p>Rick Pearson, Redpath&rsquo;s shop foreman, explained that the Redbore 30 had a long list of engineering requirements for the firm&rsquo;s developers to fulfill. The drill had to occupy as little space as possible while being rugged, delivering great power, and drilling upward into the rock. The same was true for the components.</p> <p>With regard to the drive technology, those requirements are exactly why the choice fell to the compact Hagglunds direct drive hydraulic motor. Redpath&rsquo;s experience with this motor has been excellent. &ldquo;The H&auml;gglunds is the proven Cadillac of high-torque, low-speed hydrostatic drives on the market,&rdquo; added Pearson.</p> <h3>Versatility in Action</h3> <p>When designing the Redbore 30, it was the compact and lightweight construction of the hydraulic motor that was the deciding factor. &ldquo;The H&auml;gglunds drive changes the Redbore 30 from a typical requirement of mining to a profitable production machine,&rdquo; Pearson emphasizes.</p> <p>Another contribution is made by a through shaft. During the drilling process, it is possible to cool the piloting and reaming bits with air and water. This ensures that the compact Redbore 30 always keeps a cool head as it cuts through the rock at variable speed, all the while applying high torque with torque limiting.</p> <p><em>Joe Pegg is with Bosch Rexroth Canada Corp., Canada. For more information on Hagglunds hydraulic motors and other products and services, <a href="http://www.boschrexroth.com/en/us" target="_blank">click here</a>.</em></p> <table bgcolor="#CCFFFF" border="1" cellpadding="10" cellspacing="3" style="width: 595px;" table=""> <tbody> <tr> <td> <h3>Boxhole Drill Uses Dual-Displacement Motor</h3> </td> </tr> <tr> <td> <p>The H&auml;gglunds Series CA motor was developed for applications requiring high-torque, low-speed motors where small size, light weight, and the ability to handle shock loading are important issues. The result is a compact hydraulic drive with that shares the same benefits as other H&auml;gglunds motors from Bosch Rexroth. The CA motor also features multiple mounting options and a useful through-hole shaft design.</p> <p><img alt="Fig. 2" height="257" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Sidebar-image-Rexroth-23680.gif" style="margin: 5px; float: right;" width="250" />CA series motors are available in more than 20 standard sizes from 1,256 to 13,200 cc/rev and maximum pressure rating of 350 bar. Specific torque is rated from 20 to 210 N-m/bar and maximum speed is rated 400 to 115 rpm. More than half the models are available with a dual-displacement cuts displacement and torque in half when needed.</p> <p>The CA 140-120 motor used in the Redbore 30 is a dual-displacement model. It operates at either 7,543 or 3,771 cc/rev for maximum speeds of 120 or 60 rpm, respectively. At the operating pressure of 3,000 psi (207 bar), the CA14-120 transmits 24,840 N-m of torque in or full-displacement mode or 12,420 N-m at low displacement.</p> </td> </tr> </tbody> </table> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"> <img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"> <a href="/datasheet/mining-drill-provides-high-torque-small-space-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table></div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/other-components/mining-drill-provides-high-torque-small-space#comments Other Components Thu, 02 Jul 2015 16:31:00 +0000 33151 at http://hydraulicspneumatics.com Mining Drill Provides High Torque in Small Space (.PDF Download) http://hydraulicspneumatics.com/datasheet/mining-drill-provides-high-torque-small-space-pdf-download <div class="node-body datasheet-body"><p>Mines for precious metals usually consist of a series of horizontal tunnels cut in strategic locations, each chosen to extract the greatest amount of ore with the least amount of excavation. Often, however, large pockets of ore are located in a less accessible area...</p> <p><strong>Register or sign in below to download the full article in .PDF format, including high resolution graphics and schematics when applicable.</strong></p> <div class="gatedLogin well"> <div class="contentPadding clearfix"> <h2>Register for Complete Access (Valid Email Required)</h2> <p><p><img src="http://hydraulicspneumatics.com/site-files/hydraulicspneumatics.com/files/uploads/2015/03/HP-Calculate-w-Air.jpg" />By registering on Hydraulics &amp; Pneumatics now, you&#39;ll not only gain access to , you&#39;ll also receive a complimentary copy of <em>Hydraulics &amp; Pneumatics&#39; Measure with Air </em>wallcharts.</p> </p> <div class="gatedLoginButtons gated-register-button"> <div class="button-region"> <a href="/penton_ur/nojs/user/register?source=gated&nid=33161&regmode=1" class="ctools-use-modal btn btn-branded btn-wide ctools-modal-register" title="Register at this site.">Register</a> </div> <div class="loginLinkText"> Already registered? <a href="/penton_ur/nojs/login" class="ctools-use-modal ctools-modal-log_in" title="">Log In</a> here. </div> </div> </div> </div> </div> <div class="og_rss_groups"></div> Gold Thu, 02 Jul 2015 16:15:00 +0000 33161 at http://hydraulicspneumatics.com How to Design Stable Closed-Loop Circuits http://hydraulicspneumatics.com/blog/how-design-stable-closed-loop-circuits <div class="node-body blog-body"><p>Robert Burton was an expert in electrohydraulic servo system design for more than 40 years. He contributed articles to <em>Hydraulics &amp; Pneumatics</em> during the 1990s, and our September 1996 issue contains an in-depth article explaining electrohydraulic closed-loop control without of the complicated math that&#39;s often a part of tutorial material.</p> <p>If you&#39;re thinking a 20-year old article can&#39;t offer much for today&#39;s digital control systems, think again. The basics servo-system design remain the same, so if this is a subject you&#39;d like to learn more about, <strong><a href="http://hydraulicspneumatics.com/controls-instrumentation/designing-closed-loop-circuits-stability" target="_blank">click here</a></strong> to read his article.<img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Screen%20Shot%202015-07-01%20at%209.54.25%20PM.png" style="width: 600px; height: 300px; float: left; margin-left: 4px; margin-right: 4px;" /></p> </div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hitch-post">The Hitch Post</a></li> </ul></div> http://hydraulicspneumatics.com/blog/how-design-stable-closed-loop-circuits#comments Controls & Instrumentation Cylinders & Actuators Hydraulic Valves The Hitch Post Thu, 02 Jul 2015 01:35:00 +0000 33141 at http://hydraulicspneumatics.com Oxbo Technology for Grape Harvesters http://hydraulicspneumatics.com/hydraulic-pumps-motors/oxbo-technology-grape-harvesters <div class="node-body gallery-body"><p>Hydraulics plays an essential role in virtually all functions of grape and olive harvesters offered by Oxbo Corp. Here&#39;s a close look at the technology inside the success of these machines. &nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/oxbo-technology-grape-harvesters#comments Hydraulic Pumps & Motors Tue, 30 Jun 2015 20:48:00 +0000 33121 at http://hydraulicspneumatics.com Hydraulics Know-How: Just-In-Case versus Just-In-Time http://hydraulicspneumatics.com/blog/hydraulics-know-how-just-case-versus-just-time <div class="node-body blog-body"><p>On a recent flight, I listened to an audio recording in which a business coach talked about just in time versus just in case learning. His premise was, when an entrepreneur or manager is starting and/or growing a business, there is much to learn - but the time available to do so is scarce. So this coach&#39;s suggestion was to learn what you need to know - as and when you need to know it - something he referred to as just in time learning, as opposed to spending scarce time learning about something which may be useful to know at some point in the future - just in case learning.<br /> <br /> In a business context, an example would be where a manager is presented with an opportunity to learn about say, intellectual property contracts. So she thinks to herself: &quot;This will be valuable knowledge - if we decide to license our product at some point in the future&quot;. Because the entrepreneur/manager has no immediate need for this knowledge, it is just in case learning.<br /> <br /> On the other hand, if the same manager is about to hire several, key employees, it would be far more efficient - and immediately beneficial, if she were to learn how to avoid the 7 most common hiring mistakes most managers make. Because she needs this knowledge right now, it is just in time learning.<br /> <br /> Assuming this manager doesn&#39;t have the time to pursue both of these learning opportunities, her choice should be obvious; she should pursue the one most relevant to her immediate priorities. And this is the premise of just in time learning.<br /> <br /> This concept makes a lot of sense in a business management context. But it got me thinking about how just in time versus just in case learning applies to a technical specialization such as hydraulics. And I came to the conclusion that a just in time approach to learning (or learning more) about hydraulics is great in theory but doesn&#39;t work very well in practice.<br /> <br /> Because for just in time learning to work for you, you need to be able to define exactly what you need to know - and when you need to know it. And the trouble with hydraulics is, you never really know what it&#39;s going to throw at you next!<br /> <br /> There are exceptions of course. For example, if you&#39;re a designer and you know your next project will require the design of a closed-loop electro-hydraulic system, then you likely have the opportunity to get this knowledge - just in time.<br /> <br /> Or similarly, if you&#39;re a maintenance guy and your plant has just taken delivery of a new piece of equipment with a complex servo-hydraulic system, you have the opportunity to bone up on this type of system - hopefully before it throws a problem at you - again, just in time.<br /> <br /> But most of the time, your need for hydraulics know-how is not so orderly. Which is why if you&#39;re actively involved with hydraulic equipment, you should be continuously open to just in case learning. Because the alternative is just too late learning. And if you haven&#39;t read it yet, a good place to start is my free report: &quot;<a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=smr"><strong>6 Costly Mistakes Most Hydraulics Users Make... And How You Can Avoid Them&quot;, available for instant download here</strong></a>.</p> </div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div> http://hydraulicspneumatics.com/blog/hydraulics-know-how-just-case-versus-just-time#comments Hydraulics At Work Mon, 29 Jun 2015 22:41:00 +0000 33111 at http://hydraulicspneumatics.com One Simple Way To Remove Water From Hydraulic Oil http://hydraulicspneumatics.com/blog/one-simple-way-remove-water-hydraulic-oil <div class="node-body blog-body"><p>If you&#39;ve worked with hydraulic equipment for any length of time, it&#39;s likely that you&#39;ve come across a hydraulic system with cloudy oil. Oil becomes cloudy when it&#39;s contaminated with water above its saturation level. The saturation level is the amount of water that can dissolve in the oil&#39;s molecular chemistry and is typically 200 to 300 ppm at 68&deg;F (20&deg;C) for mineral hydraulic oil.<br /> <br /> Note that if hydraulic oil is cloudy it indicates that a minimum of 200 - 300 ppm of water is present. I recently audited a hydraulic system with cloudy oil that was found to contain greater than 1% (10,000 ppm) water!<br /> <br /> A simple but effective way to dry the oil is pass a small quantity (~4 SCFM) of desiccant dry air (-40&deg;F dew point) through the reservoir continuously.This technique is often referred to as &quot;head space flush&quot;. Another variation of this technique involves installing a desiccant breather on the tank (it should be there already if you&#39;re serious about controlling water contamination - see below) and connecting a vacuum pump to the head space (requires a spare port - ideally as far away from the breather as possible). The beauty of this variation is its simplicity - you don&#39;t need access to a source of clean, dry compress air.<br /> <br /> And like all other forms of contamination, preventing water ingress is cheaper than removing it from the oil. A major point of water ingression is through the reservoir breather itself. Many hydraulic system reservoirs are fitted with breather caps that allow moisture (and particles) to enter the reservoir as the fluid volume changes through thermal expansion and contraction, and/or the actuation of single-rod cylinders.<br /> &nbsp;<br /> Replacing the standard breather cap with a hygroscopic breather will eliminate the ingression of moisture (and particles) through the reservoir&#39;s vent. These breathers combine a woven-polyester media that filters particles as small as 3 microns, with (usually) silica gel desiccant to remove water vapor from the air. The result is relative humidity levels within the reservoir head space that make condensation unlikely, therefore eliminating water ingression at this point.<br /> <br /> Bottom line: allowing your hydraulic oil to get and stay wet can be a costly mistake. And to discover six other costly mistakes you want to be sure to avoid, <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=smr"><strong>get &quot;Six Costly Mistakes Most Hydraulics Users Make... And How You Can Avoid Them!&quot; available for FREE download here</strong></a>.</p> </div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div> http://hydraulicspneumatics.com/blog/one-simple-way-remove-water-hydraulic-oil#comments Hydraulics At Work Mon, 22 Jun 2015 22:47:00 +0000 33101 at http://hydraulicspneumatics.com FAQ's on What type of cylinder stroke sensor do I need? http://hydraulicspneumatics.com/cylinders-actuators/faqs-what-type-cylinder-stroke-sensor-do-i-need <div class="field-deck"> Sponsored by Balluff </div> <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/Balluff-150_logo.gif" style="width: 150px; height: 42px; float: right;" />There are lots of products out there for sensing the stroke position of a hydraulic cylinder. How do I know which one to use? What&rsquo;s the difference? Aren&rsquo;t these the same thing? If switches don&rsquo;t do as much, why would I use them? So switches are only used for sequential operations?</p> <p>Download <em><strong>What type of cylinder stroke sensor do I need?</strong></em>&nbsp; to get the answers to these questions and more.</p> <p><br /> <script> document.write('<iframe style="height: 900px; width: 100%" frameBorder="0" src="http://pages.hydraulicspneumatics.com/HP_Digital_Balluff_CylinderStrokeSensorNeed_WP_JR_061215?partnerref=' + getParameterByName("partnerref") + "&elq=" + getParameterByName("elq2")+'" frameborder="0"></iframe>'); function getParameterByName(name) { var match = RegExp('[?&]' + name + '=([^&]*)') .exec(window.location.search); if(match == null) return ""; return match && decodeURIComponent(match[1].replace(/\+/g, ' ')); } </script></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/cylinders-actuators/faqs-what-type-cylinder-stroke-sensor-do-i-need#comments Design FAQs Cylinders & Actuators Tue, 16 Jun 2015 19:56:00 +0000 33091 at http://hydraulicspneumatics.com Why You Should KNOW Your Hydraulic Oil's 'A.N.' http://hydraulicspneumatics.com/blog/why-you-should-know-your-hydraulic-oils <div class="node-body blog-body"><p>There are generally two conditions which necessitate an oil change. One of these is oxidative degradation. And the only way to know if the oil&#39;s life has expired based on this condition is to do regular oil analysis.<br /> <br /> A hydraulic oil&#39;s oxidative condition is determined by an absolute measure of its total acid concentration. When oxygen combines with hydrocarbon molecules a chain reaction occurs, which results in the formation of organic acids. These substances darken the oil, increase viscosity, reduce foaming resistance and air release, and form varnish and sludge. In other words, the oil becomes unserviceable.<br /> <br /> The total acid number (AN) test result is expressed by the volume of the alkaline, potassium hydroxide (KOH) in milligrams (mg), required to neutralize the acidic components contained in one gram (gm) of used oil.<br /> <br /> Due to their additive composition, new zinc-based, mineral hydraulic oils can have a rather high initial AN of 1 to 1.5 mg KOH/gm. This number initially decreases as additives deplete. But as the oil starts to age and oxidize, the formation of acidic by-products reverses this trend and causes AN to rise.<br /> <br /> For mineral hydraulic oils, AN of 2.0 mg KOH/gm is the typical trigger value for an oil change. But for synthetic esters and some triglycerides (vegetable based oils) AN can be as high as 5.0 mg KOH/gm before an oil change is required.<br /> <br /> With the above in mind here&#39;s your mission, should you chose to accept it:</p> <ol> <li>If you don&#39;t know the AN value which should trigger an oil change for each of the hydraulic oils you are using - contact your oil supplier to find out.</li> <br /> <li>If you don&#39;t know the current AN of the hydraulic oils you have in service, isn&#39;t it time you found out? This is one reason why failing to regular oil analysis can be a costly mistake. And to discover six other costly mistakes you want to be sure to avoid with your hydraulic equipment, <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=smr"><strong>get &quot;Six Costly Mistakes Most Hydraulics Users Make... And How You Can Avoid Them!&quot; available for FREE download here</strong></a>.</li> </ol> </div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div> http://hydraulicspneumatics.com/blog/why-you-should-know-your-hydraulic-oils#comments Hydraulics At Work Mon, 15 Jun 2015 22:39:00 +0000 33081 at http://hydraulicspneumatics.com Position Sensors Eye Extreme Temperatures http://hydraulicspneumatics.com/controls-instrumentation/position-sensors-eye-extreme-temperatures <div class="node-body article-body"><p>Featuring synchronous serial interface (SSI) functionality, the GB series of magnetostrictive position sensors now offer SSI or analog-output options. They can be programmed with a hand-programmer unit, a PC with USB connection, or wirelessly via Bluetooth. The Bluetooth option allows for programming in hard-to-reach places. Versions can measure maximum lengths between 25 mm and 3.25 m. The series offers high-resolution position sensing with up to &plusmn;0.02% full-scale linearity and &plusmn;0.005% FSO&nbsp;repeatability. With a rod-shaped design and resistance to extreme temperatures between &ndash;40&deg; and 90&deg;C, the sensors suit the steam industry and high temperature plants. Extended temperature range versions operate between 40&deg; and 100&deg;C. Supporting electronics come in flat housing with IP-67 ingress protection for adapted connectors and IP68 protection for cable outlets.</p> <p>MTS Systems Corp., Sensors Div., (800) 633-7609, <a href="http://www.mtssensors.com" target="_blank">www.mtssensors.com</a></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/controls-instrumentation/position-sensors-eye-extreme-temperatures#comments Products Controls & Instrumentation Mon, 15 Jun 2015 19:04:00 +0000 33071 at http://hydraulicspneumatics.com Easy-to-Install DC Power Packs http://hydraulicspneumatics.com/products/easy-install-dc-power-packs <div class="node-body article-body"><p>These dc power packs feature 12- and 24-V motors to handle heavy-duty hydraulic applications. The preassembled packages facilitate installation and allow for vertical or horizontal mounting. The cast-aluminum manifold suits industry standards for valves. Models are available with custom circuitry to meet requirements in applications such as dump bodies, single-acting cylinders, and lift gates. Six pump sizes and nine reservoir sizes with steel or polyethylene construction are available, along with several valve options.</p> <p>Muncie Power Products Inc., (765) 284-7721, <a href="http://www.munciepower.com/" target="_blank">www.munciepower.com</a></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/products/easy-install-dc-power-packs#comments Products Mon, 15 Jun 2015 16:01:00 +0000 33061 at http://hydraulicspneumatics.com Digital Panel Meters Accept Wide Range of Inputs http://hydraulicspneumatics.com/other-components/digital-panel-meters-accept-wide-range-inputs <div class="node-body article-body"><p>Platinum digital panel meters feature 24-bit analog-to-digital converters that can measure 20 samples per second. The nine-segment LED display has a wide viewing angle and displays full-scale positive and negative readings in red, green, or amber. The meters produce accurate readings for nine types of thermocouples, as well as readings for resistance temperature detectors (RTDs), thermistors, and analog DC voltages and currents. They are compatible with firmware and USB communications. Optional Ethernet, RS232/RS485 with Modbus Serial Communications, and alarm relays are also available. It accepts power supplies between 90 and 120 Vac.</p> <p>Omega Engineering Inc., <a href="http://www.omega.com/" target="_blank">www.omega.com</a>, (203) 359-1660</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/other-components/digital-panel-meters-accept-wide-range-inputs#comments Products Other Components Thu, 11 Jun 2015 16:50:00 +0000 33041 at http://hydraulicspneumatics.com Reservoir Rust Inhibitor http://hydraulicspneumatics.com/reservoirs-accessories/reservoir-rust-inhibitor <div class="node-body article-body"><p>OilN<sub>2</sub> prevents the oxidation of oil in reservoirs by removing oxygen and moisture from the surrounding air. The self-contained environmental apparatus uses thermal conduction rod technology to continually remove oxygen and wet air from the reservoir and store it in a removable cartridge. The units are easily attached directly to the vent port of oil reservoirs. The units provide a clean, closed oil reservoir, blanketing the oil with nitrogen air to prevent contamination, emulsification, oxidation, rust, microbial activity, and other problems that are common in open reservoirs.</p> <p>Inventive Resources Inc., (209) 285-6158, <a href="http://www.oiln2.com/" target="_blank">www.OilN2.com</a></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/reservoirs-accessories/reservoir-rust-inhibitor#comments Hydraulic Fluids Reservoirs & Accessories Thu, 11 Jun 2015 16:43:00 +0000 33031 at http://hydraulicspneumatics.com Stainless Steel T-Type Filters http://hydraulicspneumatics.com/hydraulic-filters/stainless-steel-t-type-filters <div class="node-body article-body"><p>High pressure T-type filter assemblies are constructed completely out of stainless steel. Housing and filter options are suited for caustic, viscous, and radioactive environments. They are easily cleaned and support pressures as high as 20,000 psi. The filters, made out of thin filaments of non-woven stainless steel, have up to 85% porosity to support high flow rates.&nbsp; The random-fiber filter is designed for absolute particle retention, long on-stream time, and high ability to hold dirt.</p> <p>Swift-JB International LLC, (281) 227-0298, <a href="http://www.swift-jbinternational.com/">www.swift-jbinternational.com</a></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-filters/stainless-steel-t-type-filters#comments Products Hydraulic Filters Thu, 11 Jun 2015 16:30:00 +0000 33021 at http://hydraulicspneumatics.com Hydraulic Cylinders Provide Muscle for Pipelaying http://hydraulicspneumatics.com/marine-offshore/hydraulic-cylinders-provide-muscle-pipelaying <div class="node-body article-body"><p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Enerpac%201%2C000Te%20hydraulic%20cylinders%20for%20Pioneeting%20Spirit%20low%20res.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Enerpac%201%2C000Te%20hydraulic%20cylinders%20for%20Pioneeting%20Spirit%20low%20res.jpg" style="width: 222px; height: 156px; float: right; margin-left: 4px; margin-right: 4px;" title="Enerpac custom built double-acting high tonnage hydraulic cylinders for the Pioneering Spirit lifting beams.Click on image for larger view." /></a><strong><a href="http://www.enerpac.com" target="_blank">Enerpac</a></strong>, Menomonee Falls, Wis., supplied dozens of high-pressure hydraulic cylinders for the topside lift system beams on Allseas &lsquo;Pioneering Spirit&rsquo; vessel.&nbsp;<strong><a href="http://www.allseas.com" target="_blank">Allseas Group S.A.</a></strong>,&nbsp;Ch&acirc;tel-Saint-Denis, Switzerland,&nbsp; is a global leader in offshore pipeline installation and subsea construction. The company operates a versatile fleet of specialized pipelay and support vessels designed and developed in-house.</p> <p>The cylinders are an integral part of the vessel&rsquo;s lift system, enabling the installation and decommissioning of complete topsides weighing up to metric 48,000 tons. &lsquo;Pioneering Spirit&rsquo; is the largest platform installation, decommissioning, and pipelay vessel in the world. The vessel&rsquo;s 16 lifting beams feature 64 Enerpac <strong><a href="http://www.enerpac.com/en-us/industrial-tools-imperial/hydraulic-cylinders-jacks-lifting-products-and-systems/high-tonnage-construction-cylinders/clrg-series-high-tonnage-cylinders" target="_blank">CLRG Series</a></strong> high-tonnage, double-acting hydraulic cylinders arranged in groups of four. Designed specifically for heavy lifting up to 1,000 metric tons, the cylinders were delivered within three months of Enerpac signing the contract with Allseas.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Pioneering%20Spirit%20lifting%20beams%20under%20construction%20low%20res.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Pioneering%20Spirit%20lifting%20beams%20under%20construction%20low%20res.jpg" style="width: 250px; height: 153px; float: left; margin-left: 4px; margin-right: 4px;" title="Pioneering Spirit lifting beams feature Enerpac double-acting high tonnage hydraulic cylinders for fast lift during platform installation / decommissioning. Click on image for larger view." /></a>Not only do the cylinders provide the impressive lifting forces needed for this application, they do so&nbsp; with precise control. This level of lifting accuracy enables the &lsquo;Pioneering Spirit&rsquo; to use the fast lift method.&nbsp; The lifting beams extend during installation and decommissioning, allowing platform topsides to be lifted several meters.&nbsp;</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Pioneering%20Spirit%20showing%20the%20lifting%20beams%20-%20courtesy%20Allseas.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Pioneering%20Spirit%20showing%20the%20lifting%20beams%20-%20courtesy%20Allseas.jpg" style="width: 255px; height: 191px; float: right; margin-left: 4px; margin-right: 4px;" title="Allseas Pioneering Spirit showing the lifting beams. Imager courtasy Allseas Group SA. Click on image for larger view." /></a>Each custom 1,000 -ton cylinder was designed by Enerpac&rsquo;s engineering team near Madrid, Spain, and produced in Hengelo, Netherlands. To ensure long, trouble-free operation offshore, the&nbsp;&nbsp; cylinders have high corrosion resistance. For example, the parts were first given an 80/20 nickel-chrome plasma spray, then an aluminum-titanium plasma spray. Two layers of special coating to close the pores of the steel followed this. A final baked-enamel finish and plated pistons for each cylinder are compliant with the <a href="https://www.standard.no/en/sectors/energi-og-klima/petroleum/norsok-standard-categories/m-material/m-5014/" target="_blank">NORSOK M-501</a> standard for surface preparation and protective coating.</p> <p>For more information on Enerpac high-pressure hydraulic cylinders, call (262) 293-1600 or&nbsp;visit <a href="http://www.enerpac.com" target="_blank">www.enerpac.com</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/marine-offshore/hydraulic-cylinders-provide-muscle-pipelaying#comments Cylinders & Actuators Marine & Offshore Wed, 10 Jun 2015 15:45:00 +0000 32981 at http://hydraulicspneumatics.com Flow Dividers Lend a Hand at the Farm http://hydraulicspneumatics.com/agricultural/flow-dividers-lend-hand-farm <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/baillivet_web.jpg" style="width: 595px; height: 335px;" title="Hay-bale pickers require consistency under a range of flow and pressure inputs." /></p> <p>Located in Morlhon-le-haut in southwest France, <a href="http://www.altec.fr/" target="_blank">Altec</a> designs, manufactures and distributes a wide range of agricultural implements for handling sheep-, cattle-, horse-, and goat-breeding processes. The company offers hydraulic machinery including bale handlers, bag lifters, un-winders, mulchers, fertilizer spreaders, front-wheel packers, and front-power lifts. Machinery can be fitted with a wide range of mountable attachments for different applications and materials.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/news/flow-divider-options-enhance-hydrostatic-drives">Flow-Divider Options Enhance Hydrostatic Drives</a></p> <p><a href=" http://hydraulicspneumatics.com/maintenance/troubleshooting-challenge-flow-dividers-keep-breaking">Troubleshooting Challenge: Flow Dividers Keep Breaking</a></p> <p><a href=" http://hydraulicspneumatics.com/cylinders-amp-actuators/use-flow-divider-double-cylinder-speed">Use a Flow Divider to Double Cylinder Speed</a></p> </div> <p>Altec machinery is designed to function in harsh applications, including high-pressure water cleaning, heavy vibrations and shocks, and corrosive chemical interaction, all while surviving dusty or muddy conditions. Now, the company adopts flow dividers from Webtec Productions Ltd. to further farm-proof their machines.</p> <p>The flow dividers are highly tolerant to oil contamination, keeping hydraulic systems running while they do the dirty work. They also produce consistent output under wide variations in flow and pressure. Furthermore, the dividers feature manual or motorized control to suit the wide range of Altec machines.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/altec_web.png" style="width: 595px; height: 421px;" title="This attachment allows for hay distribution in the barnyard. The addition of Webtec flow dividers increase the hydraulic system’s tolerance to debris and dirt that may enter the oil reservoir." /></p> <p>As confirmed by an Altec technical manager, &ldquo;Webtec flow dividers are insensitive to oil contamination and provide us with consistent performance on every machine. The machines can vary from a 30-year old tractor to the latest telehandler. The conditions under which the equipment may be operated combined with the continuous effort to strive for increased productivity means that ruggedness and reliability have to be designed into our products while making them user-friendly at the same time.&rdquo;</p> <p>Altec also uses different versions of Webtec flow dividers, including variable flow dividers with manual or remote control, as well as specially designed valves to meet specific customer requirements.</p> <p>For information on Webtec&rsquo;s flow dividers and other products, call (800) 932-8378, email <a href="mailto:sales-us@webtec.com">sales-us@webtec.com</a>, or go to <a href="http://www.webtec.com" target="_blank">www.webtec.com</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/agricultural/flow-dividers-lend-hand-farm#comments Agricultural Wed, 10 Jun 2015 15:07:00 +0000 32971 at http://hydraulicspneumatics.com Troubleshooting Challenge: Hydrostatic Side Thruster Stops Working http://hydraulicspneumatics.com/hydraulic-pumps-motors/troubleshooting-challenge-hydrostatic-side-thruster-stops-working <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/troubleshooting-challenge-hydrostatic-side-thruster-stops-working-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Despite flooding of the Ohio River this past spring, a large party riverboat was able to continue operating using its side thruster to facilitate docking even though high forces from the rushing river occurred. The main propellers provided more than enough thrust to move the boat ahead and astern , and steering to port and starboard was not a problem. The side thruster allowed docking the boat at an angle as the crew navigated the craft sideways, aligning it parallel to the dock.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/cylinders-actuators/troubleshooting-challenge-lumberyard-stacker-cylinder-drops">Troubleshooting Challenge: Lumberyard Stacker Cylinder Drops</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/troubleshooting-challenge-pump-keeps-losing-its-prime">Troubleshooting Challenge: Pump Keeps Losing Its Prime</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/troubleshooting-challenge-pump-housing-cracking">Troubleshooting Challenge: Pump-housing Cracking</a></p> </div> <p>However, the thruster suddenly stopped working one day, so we were contacted to investigate. The Captain said a diesel engine was driving a gearbox for the side thruster drive, and when they engaged a driveline clutch, the main pump appeared to be rotating. However, they could not get any rotation of the thruster props.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/HydrostaticCircuit.png" style="width: 596px; height: 940px;" /></p> <p>The cruise line&rsquo;s mechanic told us that the original 0- to 600-psi pressure gauge mounted on the pump was broken, so he replaced it with a 0- to 6,000-psi gauge from one of the main system pressure lines. The charge pressure should be about 250 psi for the main pump, and it would be difficult to read that low a pressure from a 6000-psi gauge.</p> <p>We looked to see if there was any movement of the gauge needle when the system was energized, but we could not see any at all. The servo control mounted on the pump seemed to function both manually and electronically but the pump would not turn the props in either direction.</p> <p>Any idea what the problem turned out to be?</p> <p><strong>Find the Solution </strong></p> <p>Think you know the answer to this month&rsquo;s problem?</p> <p>Submit your solution by emailing Mindy Timmer at <a href="mailto:timmer@cfc-solar.com">timmer@cfc-solar.com</a>. All correct solutions submitted by June 26, 2015, will be entered into a random drawing for a $50 gift card. The winner will be notified, and his or her name will be printed in a future issue. Only one gift card will be awarded to any participant within a calendar year.</p> <p>Congratulations to Jeff Olsen, of A &amp; L Hydraulics, Sioux Falls, S. D., who correctly answered our May 2015 puzzler. A $50 gift card is in the mail to him.</p> <p><strong>Solution to last month&rsquo;s problem:</strong></p> <p><a href="http://hydraulicspneumatics.com/cylinders-actuators/troubleshooting-challenge-lumberyard-stacker-cylinder-drops" target="_blank"><strong>Lumberyard Stacker Cylinder Drops</strong></a></p> <p>When the yard stacker lift suddenly dropped, it always happened when the rotation function was selected at the same time. The directional valve sections had load checks in each function. They prevented the backflow of oil from one heavier load to a lighter load function if both were shifted at the same time. We found the load check for the lift function was being held open by what looked like a roll pin. We never found out where the pin came from, but removing the obstruction fixed the problem.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/troubleshooting-challenge-hydrostatic-side-thruster-stops-working-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/troubleshooting-challenge-hydrostatic-side-thruster-stops-working#comments Hydraulic Pumps & Motors Wed, 10 Jun 2015 14:14:00 +0000 32951 at http://hydraulicspneumatics.com June 2015 http://hydraulicspneumatics.com/hydraulics-pneumatics/2015-06-10 <div class="node-body magazine_issue-body"></div> <fieldset class="fieldgroup group-mag-teasers"> <div class="field-mag-teaser"> <a href="/pneumatic-valves/10-safety-products-every-pneumatic-tool-kit">10 Safety Products for Every Pneumatic Tool Kit</a> <a href="/pneumatic-valves/weather-resistant-valves-give-buses-lift">Weather-Resistant Valves Give Buses a Lift</a> <a href="/agricultural/controls-squeeze-performance-grape-harvesters">Controls Squeeze Performance from Grape Harvesters</a> </div> </fieldset> <fieldset class="fieldgroup group-publication-info"><legend>Publication Info</legend> </fieldset> <div class="og_rss_groups"></div> Wed, 10 Jun 2015 04:00:00 +0000 32991 at http://hydraulicspneumatics.com Combining Functions Saves Time, Cuts Cost, Improves Quality http://hydraulicspneumatics.com/hydraulic-pumps-motors/combining-functions-saves-time-cuts-cost-improves-quality <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/combining-functions-saves-time-cuts-cost-improves-quality-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Virtually all heavy equipment in construction, mining, agriculture, and similar off-highway applications rely heavily on hydraulics. And a good number of these machines use rotating members that require transmitting hydraulic fluid from a fixed location to components on a rotating assembly. Rotating joints (swivels) have served this requirement well by functioning as slip rings for hydraulics. But rotating swivels don&rsquo;t transmit electrical power or signals, so designers have to specify hydraulic swivels and electric slip rings separately. A simpler and more economical solution is offered by <a href="http://www.uea-inc.com" target="_blank">United Equipment Accessories (UEA)</a>, Waverly, Iowa.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/harvesting.png" style="width: 595px; height: 446px;" title="Off-highway equipment such as this log harvester have to transmit hydraulic fluid between the non-rotating boom and the rotating processing head. It also has to transmit electrical power to operate valve solenoids in the head. Combining a hydraulic swivel with an electrical slip ring is holds advantages over using two separate components." /></p> <p>When slip rings and hydraulic swivels are specified separately, equipment is at higher risk for failure and requires added assembly and more maintenance, according to UEA&rsquo;s Dean Flaig. Using a combination unit&mdash;a slip ring and hydraulic swivel cohesively designed together as a single assembly&mdash;improves economies of scale and reduces the number of components, suppliers, and the potential for component failure.</p> <p>&ldquo;When slip rings and hydraulic swivels are supplied from one company, your design is cleaner and the parts are more resistant to outside elements like salt spray and adverse weather,&rdquo; added Flaig. With more than 20 years experience working with hydraulic swivels, Flaig has seen first-hand the benefits of a combination unit. &ldquo;It&rsquo;s the heart of the machine. Slip rings and hydraulic swivels are a natural match.&rdquo;</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/forestry-amp-lumber/log-harvester-benefits-ball-less-swivel-design">Log Harvester Benefits from Ball-less Swivel Design</a></p> <p><a href=" http:///hydraulicspneumatics.com/cylinders-amp-actuators/swivel-makes-light-work-heavy-loads">Swivel Makes Light Work of Heavy Loads</a></p> <p><a href=" http://hydraulicspneumatics.com/hydraulic-pumps-motors/fundamentals-hydraulic-motors">Fundamentals of Hydraulic Motors</a></p> </div> <p>Purchasing slip rings and hydraulic swivels separately has its drawbacks. First, the chance of human error increases from having two suppliers. Second, the parts come separately instead of packaged as a single component, causing additional logistical coordination and scheduling. Third, the OEM has to align and bolt the two components together.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/slipring.png" style="width: 595px; height: 549px;" title="With its protective cover removed, this combination swivel/slip ring reveals the electrical slip ring configuration inside. An electrical cable protrudes from a fitting on the left side, and three hydraulic fittings are visible near the top of the image." /></p> <p>Conversely, tangible benefits exist for having the slip ring and hydraulic swivel engineered and built as a combination unit. First, the component is ready to install on the machine, with no assembly required to combine two parts. Second, the swivel and slip ring are guaranteed to be compatible because they come from the same manufacturer. One design from one source drives down overall costs of complete assembly. Finally, purchasing and follow-up service all goes through one company instead of two. Flaig offered, &ldquo;With one supplier, the component expertise is all-inclusive. You go to one source with any questions, problems, or changes related to the swivel and slip ring.&rdquo;</p> <p><strong>Feedback from the Field</strong></p> <p>Michael Klopp, director at Southstar Equipment, Kamloops, BC has seen the benefits of using UEA as its single combination unit supplier.&nbsp; &ldquo;In the past we used separate slip rings and we were constantly trying to match them to the swivel, which caused reliability issues and lack of confidence in the slip rings. Now that we&rsquo;ve gone to the combination-style units, we receive our swivel/slip-ring units pre-wired, which also speeds up assembly time. We send these machines out, and they work without any glitches right out of the gate.&rdquo;</p> <p>Other UEA companies are seeing reduced assembly time, higher quality, and better compatibility by purchasing combination slip ring-hydraulic swivel units. For Zach Dockter, engineering support manager at Manitex, the benefits are clear. He explianed, &ldquo;I choose to purchase combination hydraulic/electrical swivels because it reduces assembly time in our manufacturing plant.&nbsp; The fewer parts needed to assemble a machine typically means fewer chances for costly assembly errors.&rdquo;</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/combining-functions-saves-time-cuts-cost-improves-quality-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>For more information about United Equipment Accessories combination units and other products, call (800) 394-9986, email <a href="mailto:info@uea-inc.com">info@uea-inc.com</a>, or visit <a href="http://www.uea-inc.com/" target="_blank">www.uea-inc.com</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/combining-functions-saves-time-cuts-cost-improves-quality#comments Hydraulic Pumps & Motors Other Components Tue, 09 Jun 2015 20:14:00 +0000 32931 at http://hydraulicspneumatics.com Toughened-Up Hitch Control Also Drops in Price http://hydraulicspneumatics.com/controls-instrumentation/toughened-hitch-control-also-drops-price <div class="field-deck"> When introducing an electrohydraulic hitch control to the Indian market, engineers had not accounted for the hostile conditions typically found on Indian farms. After some seat-of-the-pants modifications, a revised hitch control not only stands up to tough conditions, but carries a lower price tag as well. </div> <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/toughened-hitch-control-also-drops-price-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p><a href="http://www.boschrexroth.com/en/us" target="_blank">Bosch Rexroth</a>, Lohr, Germany, has had impressive results from its electrohydraulic hitch control &mdash; both in Europe and North America. Farmers have responded its precise regulation of power and position when lifting and lowering the hitch. The result is accurate tillage, so soils are turned over gently and uniformly, which improves yields.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/I%26A-lead-photo.jpg" style="width: 595px; height: 395px;" title="Farm equipment in India typically is used not only in extremely wet and humid environments, but also under extremely hot and dusty conditions. Sensors and other electronic components meeting IP-67 standards won’t necessarily stand up to these conditions. Furthermore, price and limited diagnostic capabilities required re-engineering Bosch Rexroth’s electrohydraulic hitch control. " /></p> <p>The success of the in 2009, we decided to introduce electrohydraulic hitch control to India&ndash; an equipment market with enormous potential. But the feedback from initial test runs using tractors built by local manufacturers was not entirely satisfactory. Officials at Bosch Rexroth saw a need for the concept, but realized it had to be more rugged and considerably less expensive. Following is a report from Raman Sheshadri and Uwe Falkenhain, of Bosch Rexroth India:</p> <p><strong>Departures from Convention</strong></p> <p>When reworking the system for the Indian market, our first step was to conduct a closer analysis of the operating conditions. The tractors have to survive the most foreboding conditions: monsoons and high relative humidity, but also dryness, dust, and heat. All this is aggravated by the demands made in rice cultivation. Here, parts are sometimes submerged in packed-down mud. What&rsquo;s more, the tractors usually have no sprung suspension and, as a result, transmit high shock and vibration to components. To cope with these operating conditions while also costs down for the system, we decided to modify certain components and develop others from scratch.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/agricultural/controls-squeeze-performance-grape-harvesters">Controls Squeeze Performance from Grape Harvesters</a></p> <p><a href=" http://hydraulicspneumatics.com/blog/how-calculate-loop-gain-electrohydraulic-servo-systems">How to Calculate Loop Gain in Electrohydraulic Servo Systems</a></p> <p><a href=" http://hydraulicspneumatics.com/controls-amp-instrumentation/integral-control-electrohydraulic-servosystems">Integral Control for Electrohydraulic Servosystems</a></p> </div> <p>Two components in particular are exposed to the extreme weather conditions: an angular sensor and the control panel. Our standard control panel, designed for installation inside the operator&rsquo;s cab, was not suitable for use in Indian tractors, which often lack a protective cab. So we needed a control unit that would stand up to the potentially harsh conditions without the protection of an operator cab. Plus, illumination had to be brighter because the intense sunlight typically found in India made it difficult to see the display of operating functions.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/EHR5-control-valve.jpg" style="width: 595px; height: 430px;" title="Key components in Rexroth’s electrohydraulic hitch control are the EHR5 control panel, top, EHR-B controller, middle, and EHR5 control valve, above. The EHR5 control valve can be used in conjunction with directional control valves for a tractor’s working hydraulics at flow to 60 lpm and pressure to 220 bar." /></p> <p>Placement was another challenge. Following extensive deliberation, the customer and we agreed to engineer an armrest ready to accept the control panel. This steadies the farmer&rsquo;s hand when he presses the various buttons. We replaced the large actuator lever with a generously dimensioned switch with three positions: <em>lift</em>, <em>lower</em>, and <em>off</em>.</p> <p>Another important consideration was service &mdash; primarily maintenance and troubleshooting. Most repair shops in India cannot run electronic fault diagnosis, so that function was incorporated into the control panel. So the control panel not only monitors operation, but also displays faults. Now the farmer can himself determine whether an electronic component is malfunctioning. To protect the entire control panel &ndash; especially the display &ndash; we fitted the unit with a tough film to keep out moisture, dust, and to resist mechanical damage.</p> <p>Sealing electronics is always a challenge, and the IP-67 protection class used for the angular sensor would not withstand the extremely dusty conditions of these applications. As a result, we entirely re-engineered the sensor. Electronic components are now completely separate from the mechanical space.</p> <p>We also developed the controller from the ground up. It is installed in the housing Bosch had designed for the Nano city car, manufactured by Tata Motors Ltd., Mumbai. That housing is already laid out to handle the Indian climate. The control&rsquo;s software had to be adapted to the Indian market, too &ndash; shifting from the European lower linkage control to upper linkage control. This requires only one power regulation sensor instead of two and helps reduce costs.</p> <p><strong>Tackling Costs</strong></p> <p>To achieve a lower price for the Indian market, we turned to local suppliers who manufacture in India. We established local production capacities for the Bosch Rexroth&rsquo;s EHR5 valve. This valve regulates hydraulic flow to the hitch cylinders, which raise and lower the hitch assembly. We also eliminated some automated manufacturing procedures. For example, the rear cover for the angular sensor cover would normally be an ultrasonically welded assembly. Instead, we to use an appropriate adhesive, thereby reducing the overall cost of the assembly.</p> <p>Design options offered additional opportunities to reduce costs &mdash; material selection for example. Plastics prevalent in the Indian market are different from those typically found in Europe. In India, the strength of materials are matched to application requirements, and they are less expensive. Glass fiber reinforcement is seldom used.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/angularsensor.png" style="width: 595px; height: 630px;" title="The IP-67 rating of the angular position sensor normally used in the electrohydraulic hitch control was not expected to stand up to the harsh conditions of Indian farms, so it was re-engineered to separate the electronic sensor from mechanical elements. " /></p> <p>In addition, we reduced the number of required parts. In the European version, an angular sensor can be programmed for various ranges of angles, depending on the geometry of the lifting system. We did away with feature for the Indian version. Instead, the opening angle is adjusted using a resistor, which is soldered in place.</p> <p><strong>Nonstop Opportunities</strong></p> <p>Our research into additional opportunities to reduce cost has not ended, even though mass production began last year. We are currently working intensively on replacing an existing power measurement sensor with a recently developed system tailored exactly to the power ranges used in India. We will be able to achieve savings on the one hand by converting from a magnetic-elastic measurement principle to a Hall-effect sensor. We&rsquo;ll cut costs further by having the component &mdash; a draft pin sensor &mdash; manufactured in India.</p> <p>Customizing the system has already paid off, and beyond the Indian market. This prepares us for taking the next step in other BRIC nations, where similar conditions prevail. In addition, individual components will also be of interest to European customers who can then integrate them into their overall concepts.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/toughened-hitch-control-also-drops-price-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Raman Sheshadri is Sales and Industry Sector Manager, Agricultural and Forestry Machinery at Bosch Rexroth, Bangalore, India. Uwe Falkenhain is Sales and Product Manager, Mobile Electronics, for Bosch Rexroth, Schwieberdingen, Germany. For more information, call (800) 739-7684, email <a href="mailto:info@boschrexroth-us.com">info@boschrexroth-us.com</a>, or visit <a href="http://www.boschrexroth.com/en/us" target="_blank">www.boschrexroth.com/en/us</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/controls-instrumentation/toughened-hitch-control-also-drops-price#comments Agricultural Controls & Instrumentation Tue, 09 Jun 2015 18:41:00 +0000 32911 at http://hydraulicspneumatics.com The Many Roles of Accumulators http://hydraulicspneumatics.com/accumulators/many-roles-accumulators <div class="node-body article-body"><p>Accumulators store energy by compressing a gas, usually nitrogen. This high-pressure gas then forces hydraulic fluid pot of the accumulator whenever system pressure drops below the gas compressed gas pressure. The storing of potential energy and cushioning nature of compressed gas also makes accumulators useful for reducing rapid dynamic behavior of the hydraulic system.</p> <p><strong>Pulsation absorption</strong> &mdash; Many pumps deliver power in a pulsating flow. The piston pump, commonly used for its high-pressure capability, can produce pulsations detrimental to a high-pressure system. An accumulator properly located in the system will substantially cushion these pressure variations.</p> <p><strong>Shock cushioning</strong> &mdash; If a cylinder or other actuator of a hydraulic system stops suddenly, the rapid change can create a pressure wave that travels back through the system. This shock wave can develop peak pressures several times greater than normal working pressures. An accumulator&#39;s gas cushion, properly located in the system, will minimize this shock.</p> <p><strong>Supplementing pump flow</strong> &mdash; An accumulator can assist a hydraulic pump in delivering power to the system. The pump routes pressurized fluid to the accumulator during idle periods of the work cycle. The accumulator stores trhis power and makes it available to help drive the load when peak power is needed. This enables a system to utilize a much smaller pump, resulting in savings in cost and power.</p> <p><strong>Maintaining pressure</strong> &mdash; Pressure changes occur in a hydraulic system when the liquid is subjected to rising or falling temperatures. Also, pressure may drop due to leakage of hydraulic fluid. An accumulator compensates for such pressure changes by delivering or receiving a small amount of hydraulic fluid. If the main power source should fail or be stopped, the accumulator would act as an auxiliary power source, maintaining pressure in the system.</p> <p><strong>Standby power</strong> &mdash; An accumulator can retain pressurized gas indefinitely and release the energy on command. This makes accumulators useful as a standby power source for when power is lost from the prime mover. For example, the accumulator can act as a hydraulic battery to power a hydraulic starter motor of an engine.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/accumulators/many-roles-accumulators#comments Accumulators Tue, 09 Jun 2015 18:08:00 +0000 32901 at http://hydraulicspneumatics.com The Lighter Side of Accumulators http://hydraulicspneumatics.com/accumulators/lighter-side-accumulators <div class="field-byline"> Kaushik Mallick, Steelhead Composites </div> <div class="field-deck"> The benefits of composite accumulators reach beyond just weight reduction of hydraulic systems. They also can reduce installation cost and total system costs. </div> <div class="node-body article-body"><p>&ldquo;Lightweighting&rdquo; is a term used to describe a method of combining advanced technologies to manufacture similar, much lighter components. This concept is familiar to the auto industry, which has been manufacturing automobiles of all sizes that weigh a fraction of their predecessors. With Federal Corporate Average Fuel Economy (CAFE) standards requiring an increase in fuel economy and lower CO<sub>2</sub> and NO<sub>x</sub> emissions for consumer vehicles and light trucks by the year 2025, regulations are driving the auto industry to innovate and find lighter solutions. Larger on-road vehicles and mobile equipment are also being required to comply with government regulations for lowering fuel consumption, reducing emissions, and meeting company expectations of decreasing operating expenses at the same time.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/0615_Accumulators_F1.jpg" style="width: 300px; height: 555px; float: left;" title="Even though these composite accumulators look much like their steel counterparts, the composite construction reduces weight to a fraction of that of steel. The result is high power density and the potential for much lower installation costs. " /></p> <p>Fuel-efficient engines and lightening the vehicle structure are primary tactics implemented in improving mileage and reducing emissions. The top three materials the auto industry has focused on to accomplish these goals is high-strength steel, aluminum, and carbon fiber. Each high-strength, lightweight material will decrease the weight of a vehicle and, when used in conjunction, may result in significant weight savings over a heavier steel vehicle with equal strength and safety.</p> <p>Lightweighting also translates into applications such as on-road and off-road mobile equipment as well as general industrial applications. Every pound counts in some way. Driving heavy equipment to a site, harvesting equipment on a farm, or operating an excavator in a construction site increases operating expenses if this equipment is heavy. Heavy vehicles or transport vehicles operating on-road are subject to additional taxation, environmental regulations, and permitting fees. That, added with fuel charges, can sends costs soaring. The operational cost of weight is expensive.</p> <p><strong>Fluid Power as a Plus</strong></p> <p>Large OEMs face client demands and government regulations for product fuel consumption and emission restrictions encouraging them to design lighter, more efficient but equally durable vehicles. One solution is hydraulic hybrids, which use fluid power to store and reuse braking energy in hydraulic accumulators. Parker-Hannifin, Lightning Hybrids, and others are on the cutting edge of developing and commercializing hydraulic-hybrid vehicles that not only conserve fuel, but also extend the life of vehicle braking systems.</p> <p>Some of these hybrid vehicles boast a 40% to 50% decrease in fuel consumption and emissions due to these technological advances. This energy recapture and release coupled with lightweighting vehicles results in an outstanding cost savings over the long-term capital investment. Lightweighting is critical in maximizing benefits on a hydraulic hybrid vehicle platform, but can also provide substantial gains in many other hydraulic applications.</p> <p><strong>Most Bang for the Buck</strong></p> <p>Pick your heaviest essential components and make them weigh less. Sounds simple, but his is a significant design challenge for hydraulic hybrid companies. In order to achieve the maximum fuel efficiency, engineers must look for ways to lightweight the accumulators on the system while staying within budget.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/accumulators/bladder-accumulators-shed-weight">Bladder Accumulators Shed the Weight</a></p> <p><a href="http://hydraulicspneumatics.com/accumulators/reaping-benefits-accumulators">Reaping the Benefits of Accumulators</a></p> <p><a href=" http://hydraulicspneumatics.com/blog/how-avoid-hydraulic-accumulator-failure">How to Avoid Hydraulic Accumulator Failure</a></p> </div> <p>Reconsidering material selection is a clear first step in reducing the weight of the accumulators, which leads quickly to candidates such as lighter carbon-fiber composites and aluminum. But carbon fiber and aluminum both come with a hefty price tag&mdash;right? Not always. Many engineers and end users are finding the price of composite accumulators is only slightly higher than traditional steel, and the long-term operational costs usually offset the initial investment.&nbsp;</p> <p><strong>Accumulator Shell Types</strong></p> <p>Hydraulic accumulators&mdash;specifically, bladder accumulators discussed here&mdash;have been used in industry for years <em>(see &quot;<a href="http://hydraulicspneumatics.com/accumulators/many-roles-accumulators" target="_blank">The Many Roles of Accumulators</a>&quot;)</em>. The most common type of accumulators used today feature a steel shell to withstand the high pressures and high number of cycles required of an accumulator. This type of accumulator is classified as a Type 1, which means the shell is all metal (carbon steel, stainless steel, Inconel, etc.).&nbsp;</p> <p>There are essentially four types of high-pressure accumulator shells: Type 1-all metallic; Type 2&ndash;metallic with hoop overwrapped composite shell on the cylindrical section; Type 3&ndash;metallic liner with complete composite overwrap;, and Type 4&ndash;plastic liner with complete composite overwrap.&nbsp; Types 2, 3, and 4 are all examples of lightweighting the accumulator shell, with Types 3 and 4 producing the most significant impact in weight reduction. Companies like Hydac, Parker Hannifin, and Steelhead Composites all offer off-the-shelf lightweight accumulator solutions.&nbsp;</p> <p><strong>Strength, Weight, and Safety</strong></p> <p>It may seem hard to believe that something made of carbon fiber and aluminum would possibly stand up to something as strong as steel. However, studies and testing show that engineered composite structures can far exceed the strength of steel. Due to the low density, high strength, and excellent fatigue characteristics of carbon fiber, composite accumulators can provide pressure rating equal to steel accumulators while weighing only one-third to one-quarter the weight of their traditional steel counterpart.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/0615_Accumulators_F2.gif"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/0615_Accumulators_F2.gif" style="width: 400px; height: 399px; float: left; margin-left: 4px; margin-right: 4px;" title="Steelhead composite accumulators are a fraction of the weight of traditional steel accumulators. Consequently, they have four times the specific energy (energy stored per unit mass) and specific power (power delivered per unit mass) than their steel counterparts." /></a></p> <p>In today&rsquo;s hazardous world, human health and safety is at the forefront of our minds. Some of us have witnessed the results of catastrophic damage a pressure vessel can cause when something goes wrong. Composite accumulators offer additional built-in safety: a leak-before-burst feature. When the composite accumulator has reached its fatigue life, the vessel liner will simply leak, and pressure will slowly escape through the carbon fiber composite shell. This safety feature has been found to meet the rigid standards of the U.S. Department of Transportation.</p> <p>An optional safety feature is a heat-activated pressure-relief device for the quick release of the nitrogen charge stored in the bladder in case of fire. Furthermore, composite accumulators offer a huge advantage in applications where rusting and corrosion is an issue. Personnel or passengers can get peace of mind that the composite accumulator is not rusting when exposed to otherwise corrosive environments, which would not be the case with unprotected steel accumulators.&nbsp;</p> <p><strong>Testing </strong></p> <p>New technologies are always closely scrutinized, and composite accumulators are no different. However, no set standards exist for accumulators on mobile vehicles. Manufacturers of Types 2, 3, and 4 composite accumulators follow the testing guidelines set forth by the <a href="http://www.cganet.com" target="_blank">Compressed Gas Association</a>, <a href="http://www.ngvi.com" target="_blank">Natural Gas Vehicle Institute</a>, <a href="http://www.iso.org" target="_blank">International Standards Organization</a>, and <a href="http://www.asme.org" target="_blank">American Society of Mechanical Engineers</a>. Manufacturers such as <a href="http://steelheadcomposites.com" target="_blank">Steelhead Composites</a> perform rigorous testing on the accumulators to further develop and improve the design and cycle life of the vessels.</p> <p>Although steel accumulators have been proven in the field to last for millions of cycles, composite accumulators are being evaluated and optimized for cycle-life performance in relation to their end application. Currently, we have tested more than 250,000 cycles under rigor and stress that far exceed the drive-cycle characteristics of the hydraulic hybrid vehicles for which these accumulators are being used. Cycles of a million plus are on track to be achieved with the help of advanced engineering, material treatment, and extensive testing.</p> <p><strong>Operation and Maintenance </strong></p> <p>Composite accumulators made by Steelhead are light yet tough, repairable, and easy to install. The structural shell of carbon fiber and epoxy composite overwrapped over aluminum liner provide for a strong and tough structure. A sacrificial layer of glass fiber and epoxy composite creates a strong barrier against impact damage and road debris. Optional shell coatings can provide an additional layer of protection from the surrounding elements in corrosive environments.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/New%20Fig%203.png"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/New%20Fig%203.png" style="width: 400px; height: 279px; float: right; margin-left: 4px; margin-right: 4px;" title="The specific strength of carbon fiber composite is more than 10 times that of steel, which not only makes for lighter accumulators, but also holds potential for higher pressure ratings and larger sizes at lower weight than steel accumulators." /></a></p> <p>OEM replacement parts and instructions are available for trained personnel to perform standard bladder repair and maintenance resulting in a longer service life. Top-repairable models are also available that make bladder replacement simple by allowing removal of the bladder through the accumulator&rsquo;s gas-port end, thus eliminating the need to remove the accumulator from the hydraulic system.</p> <p>Additional savings can be captured in the ease of installation with less labor and possibly eliminating expensive lifting equipment normally required with heavy steel accumulators. In addition, due to their size and light weight, these composite accumulators can be installed overhead, saving valuable floor space; skid-mounted for mobility; or installed in vehicles as in the case of hydraulic hybrid retrofit systems. Ultimately, lighter weight means composite accumulators can be installed where needed or where it is most convenient, instead of forced into locations due to weight restrictions.</p> <p><strong>Industry Compatibility</strong></p> <p>Traditional steel accumulators have large openings so that bladders can be maintained easily. Steelhead&rsquo;s composite accumulator ports are no different in that they are designed with a threaded (or flanged) steel port interface with an industry-standard 3.5-in. (89-mm) diameter port opening on the hydraulic end. The large port opening not only allows easy removal and installation of the bladder, but also accommodates a bladder with a wall thickness that ensures low permeability and longer life span for the bladders. An industry standard port opening also means allowance for maximum fluid flow rates common to the industry.</p> <p>In addition to industry-standard features, composite accumulators can be engineered to specifications and prototyped in-house allowing for greater design flexibility. Some suppliers offer short lead times along with specific volume and pressure customizations.</p> <p>Hydraulic accumulator technology has not changed much over the last 50 years. However, the many advantages composite accumulators in both existing and new mobile and industrial applications should herald an increase in their use. This is especially true in factory settings, where the lighter weight of composite accumulators reduces installation cost.</p> <p><em>Kaushik Mallick is director of engineering at Steelhead Composites LLC, Golden, Colo. For more information, call (720) 524-3360 or visit <a href="http://steelheadcomposites.com" target="_blank">steelheadcomposites.com</a>. </em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/accumulators/lighter-side-accumulators#comments Accumulators Tue, 09 Jun 2015 16:10:00 +0000 32881 at http://hydraulicspneumatics.com Free Webcast Drives Home Benefits of Proactive Maintenance http://hydraulicspneumatics.com/blog/free-webcast-drives-home-benefits-proactive-maintenance <div class="node-body blog-body"><p><span class="summary" name="summary">Officials at Noria Corp. explain that the cost of a reactive maintenance program can be up to ten times that of a proactive approach. This affects numerous aspects of your business, including downtime, employee morale, attrition to share price and even operational viability.</span></p> <p>As part of their continuing series of free webinars, Noria will present, &quot;<span name="title">How to Cost Justify Your Lubrication </span><span name="title">Program</span><strong name="dateLabel">&quot; </strong><span name="date">on Tuesday</span><span name="date">, June 16, 2015, from 2:00 to 3:00 PM EDT</span>. But if you already have plans for that time or can&#39;t tune in for any other reason, you can register for the on-demand version. this allows yo to view the webinar at your leisure at a later date.&nbsp;<br /> <span class="summary" name="summary"><span class="autogrow-textarea">&nbsp;</span><br /> In this webinar, Noria&#39;s Tom Kurtz will explain why a proactive maintenance regime and sound asset management program should start with a world-class lubrication program.<br /> <span class="autogrow-textarea">&nbsp;<br /> Participants will learn:</span></span><br /> <span class="summary" name="summary"><strong>&bull;</strong> The core elements of lubrication excellence and the best ways to achieve, sustain and measure its impact on your organization.<br /> <strong>&bull;</strong> <span class="summary" name="summary">Strategies to present and secure program buy-in from company leadership.</span><br /> <strong>&bull;</strong> <span class="summary" name="summary"><span class="summary" name="summary">Tools and exercises to calculate the program&rsquo;s return on investment and other financial metrics.</span></span></span></p> <p><span class="sp-description"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/thomaskurtz_cropped.jpg" style="width: 80px; height: 95px; float: left; margin-left: 3px; margin-right: 3px;" />Thomas Kurtz is the director of business development for Noria Corporation. He is responsible for customer relations and provides critical input into technical services development. Thomas holds Machine Lubrication Technician Level II and Machine Lubricant Analyst Level III certifications from the International Council for Machinery Lubrication. Contact him via email at <a href="event:LinkEvent;tkurtz@noria.com" target="_blank"><u>tkurtz@noria.com</u></a>.</span></p> <p><a href="https://event.on24.com/eventRegistration/EventLobbyServlet?target=reg20.jsp&amp;eventid=996918&amp;sessionid=1&amp;key=8F8F4FFCA3179CBDF7C641556D67E750&amp;partnerref=email2&amp;sourcepage=register" target="_blank"><strong>Click here</strong></a> to register for the live webinar or on-demand version.</p> </div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hitch-post">The Hitch Post</a></li> </ul></div> http://hydraulicspneumatics.com/blog/free-webcast-drives-home-benefits-proactive-maintenance#comments Maintenance The Hitch Post Tue, 09 Jun 2015 14:08:00 +0000 32871 at http://hydraulicspneumatics.com 10 Safety Products for Every Pneumatic Tool Kit http://hydraulicspneumatics.com/pneumatic-valves/10-safety-products-every-pneumatic-tool-kit <div class="field-byline"> Michael Guelker, Festo Corp. </div> <div class="field-deck"> These products, from actuators to valves, help avoid high-pressure hazards and uncontrolled movements. </div> <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/10-safety-products-every-pneumatic-tool-kit-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Most reputable manufacturers consider safety to be vital on any factory floor. Recently, I examined sales of actuators and air-preparation products associated with safety. The goal was to determine which products were top sellers and, more importantly, to understand why these particular products were in high demand. Following discussions with distributors, OEMs, and our own internal team, we identified some relatively simple and low-cost components and systems that are essential for any pneumatic and hydraulic circuit&mdash;the workhorses of every system.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/cylinders-actuators/smart-actuation-pumps-and-valves">Smart Actuation of Pumps and Valves</a></p> <p><a href="http://hydraulicspneumatics.com/cylinders-actuators/assumptions-and-safety-don-t-mix">Assumptions and Safety Don&rsquo;t Mix</a></p> <p><a href="http://hydraulicspneumatics.com/other-components/safety-money-bank">Safety Is Money In The Bank</a></p> </div> <p>Upon reflection, I believe it is vital for OEM engineers to be acquainted with these products and to have them top-of-mind when designing a system. It is not an overstatement that these make up one&rsquo;s essential safety &ldquo;tool kit.&rdquo; The first five products involve actuators, and the rest focus on air supply as it relates to safe equipment operation.</p> <p><strong>1. Pneumatic Actuator Clamping Units</strong></p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/1-Rod-Clamp-Cutaway.gif" style="width: 595px; height: 325px;" title="A clamp keeps the actuator rod in a stationary position and prevents it from retracting." /></p> <p>Cylinders with integrated clamps are needed on a machine when maintaining actuator position is essential to human and work-piece safety. A clamp keeps the actuator rod in a stationary vertical position and prevents it from retracting. Because these actuators are all about holding a position rather than stopping motion in an emergency situation, they are usually located in sections of a machine away from operators.</p> <p>Clamping units are easy and inexpensive to integrate with pneumatic actuators, and they only require an air signal to operate. Compressed air maintains the spring-loaded clamp in the open position. Should there be a leak or an emergency evacuation of air, the spring snaps the clamp closed and holds the rod or guide rail in place until air pressure is restored.</p> <p><strong>2. Pneumatic Actuator Brakes</strong></p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/2-Brake-Cutaway.gif" style="width: 595px; height: 251px;" title="A pneumatic brake, as shown in this cutaway, is designed to stop a moving actuator regardless of position." /></p> <p>Clamps are ideally applied to a stationary rod or guide rail to maintain a position. Pneumatic brakes, on the other hand, are designed to stop a moving actuator regardless of position&mdash;and not damage the rod or guide during an emergency stop.</p> <p>Brakes are used in areas where an operator may have routine access. Brakes are more expensive than clamps, and they require third-party certification. Similar to clamps, air pressure maintains the brake in an open positon. A spring snaps the brake closed when air is evacuated during an emergency stop or when air leaks out of the circuit.</p> <p><strong>3. Mechanical Locks</strong></p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/3-Mechanical-End-Lock.gif" style="width: 595px; height: 510px;" title="In this interior view, a mechanical lock automatically engages a locking pin each time the cylinder reaches its end of stroke." /></p> <p>A mechanical lock automatically engages a locking pin each time the cylinder reaches its end point. This effectively holds the rod or guide in position. Positive air pressure is required to raise the locking pin and permit the actuator to retract.</p> <p>Like clamps, mechanical locks are often applied in vertical holding applications. The locks ensure the rod or guide does not drop and potentially hurt maintenance personnel working on a machine or damage an expensive work piece. Mechanical locks are not used in areas where there is a high risk of injury because only the end position is controlled, not intermediate positions. The attractiveness of mechanical locks is their simplicity and holding strength. They are, however, more expensive than clamps.</p> <p><strong>4. Position Feedback: Mechanical Flag and Linear Potentiometer</strong></p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/4-Flag-with-External-Sensing_web.jpg" style="width: 595px; height: 348px;" title="A reliable safety technique is detecting piston position using a metal flag and inductive sensor." /></p> <p>In some applications, keeping track of piston position at all times is vital for safe operation. Typically, electric actuators use magnetic proximity sensors to signal position. A better, more reliable solution is to detect piston position using a metal flag and inductive sensor.</p> <p>For example, in a rack-pinion rotary actuator, the flange and piston may not be in the same position should the gears break. It is safer to know the flange position. To accomplish this, a small metal flag attached to the flange indicates actual position. A linear potentiometer senses the flag position. A PLC can be programmed to shut down processes, remove pressure, and apply a brake or clamp if it indicates a fault position. The flag and linear potentiometer can be used with rotary as well as linear electric and pneumatic actuators.</p> <p><strong>5. Self-Adjusting Air-Cushion Cylinders</strong></p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/5-Cushion-photo.gif" style="width: 595px; height: 412px;" title="Self-adjusting pneumatic cushions mount inside actuators and provide gentle damping near the end of stroke. They eliminate the need to manually adjust end-position cushioning. " /></p> <p>Most pneumatic cylinders have a needle-valve set screw that is used to adjust the cushioning up or down on a pneumatic cylinder and, consequently, the speed of the rod. Operators and maintenance personnel may tinker with the set screws to adjust the machine. The problem is that tinkering may take the machine out of specification.</p> <p>In contrast, a relatively new product eliminates the need for set screws. <a href="http://www.festo.com" target="_blank">Festo</a> has developed a self-adjusting pneumatic-cushioning system for its round-cylinder pneumatic actuators. The cushion relies on specially engineered air channels to vent the cushioning air, letting the cushions adapt their characteristics should cylinder loads and speeds change.</p> <p>The cushion, designated PPS, provides dynamic but gentle damping as the load nears the end of the cylinder and eliminates the need to manually adjust end-position cushioning. The self-adjusting PPS cushions provide just the right damping even if parameters such as friction and pressure change. They also reduce acceleration forces on mating components and work pieces. This cuts down wear and minimizes shock and vibration. And because the exhaust flow from the cushioning chamber changes over the damping stroke, PPS cushions work with most commonly permissible speed and mass combinations, making them suitable for a wide range of applications.</p> <p>Self-adjusting cushions also reduce machine setup and commissioning time, are tamper-proof, and should provide long, maintenance-free service life. Finally, the PPS system costs less than comparable manually adjustable cylinders.</p> <p>In contrast to the previous discussion on actuators, the following sections note how air-supply products affect equipment safety.</p> <p><strong>6. Tamper-Proof Shut-Off Valves</strong></p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/6-NEW-Tamper-proof-valve.gif" style="width: 350px; height: 851px;" title="Lock Out Tag Out valves make it impossible to restore pressure while locked in place." /></p> <p>Tamper-proof &ldquo;Lock Out Tag Out&rdquo; (LOTO) valves manually shut off and vent pneumatic systems. These large and rugged LOTO valves are easily recognized because they&rsquo;re bright yellow. While the tamper-proof valve may be used in emergency situations, it is mainly used during machine maintenance to ensure no active pressure is present.</p> <p>Once pressure has been evacuated, maintenance personnel insert a lock or hasp in the valve, making it impossible to restore pressure while the lock is in place. Depending on pneumatic configurations, there may be several tamper-proof valves per machine. These valves are OSHA-compliant.</p> <p><strong>7. On-Off Valves with Piston Sensing </strong></p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/7-On-off-valve-with-piston-position-sensing.gif" style="width: 350px; height: 471px;" title="An on-off valve with piston-position sensing confirms whether a valve is on or off." /></p> <p>Unlike manually operated tamper-proof valves, a PLC electronically controls solenoid-actuated on-off valves with piston-position sensing. These units sense piston position and confirm the valve is either on or off. Other electronically controlled pneumatic on-off valves do not offer this feedback. Position sensing provides an extra margin of safety monitoring, and on-off valves can be integrated into a system to achieve a higher-category safety rating. Furthermore, these units mount directly to air-preparation modules for easier and more-straightforward installation.</p> <p><strong>8. Emergency Quick Exhaust</strong></p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/8-Emergency-quick-exhaust-valve.gif" style="width: 350px; height: 624px;" title="Emergency quick-exhaust systems vent air from circuits at extremely high rates." /></p> <p>The emergency quick-exhaust system is the type of unit most people think of when they visualize a pneumatic safety product. When a penetrated light curtain or an open guard, gate, or door activates an emergency stop switch, these PLC controlled units exhaust air from the system at rates up to 9,000 liters/min&mdash;effectively removing pneumatic pressure. These systems should meet redundancy safety guidelines under ISO 13849-1.</p> <p>These units should also protect against unexpected startups and provide for safe pressure buildup. At startup, a unit must receive two signals offset by milliseconds from the PLC. Offsetting the signals prevents startup due to a short circuit. Once the unit receives the two enable signals, it slowly lets pressure build in the system so that actuators safely complete the cycle that was interrupted by an emergency shut off.</p> <p>The optimum unit in the &ldquo;tool kit&rdquo; should come standard with built-in diagnostics, freeing the OEM from having to provide its own diagnostic system. These units are typically certified by a third party to meet Performance Level e/Category 4, which also saves the OEM considerable time and expense.</p> <p><strong>9. Piloted Check Valves</strong></p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/9-Piloted-check-valve.gif" style="width: 350px; height: 495px;" title="A piloted check valve retains pressure in a cylinder and holds it in place. It’s particularly useful in vertically mounted actuators. " /></p> <p>When air pressure is turned off, pneumatic pistons facing up may retract back into a cylinder and pistons facing down may fully extend. These movements may damage the machine, part, or people. A piloted check valve retains pressure in the cylinder, stopping it and holding it in place. Some models, for example, come standard with a manual override, which lets maintenance personnel evacuate air from the cylinder when it is judged safe to do so. Piloted check valves are useful for both emergency situations and for safety during maintenance.</p> <p><strong>10. Tamper-Proof Flow Controls</strong></p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/10-Tamper-proof-flow-control-valve.gif" style="width: 350px; height: 536px;" title="Tamper-proof flow-control valves protect against unauthorized resetting of flow rates." /></p> <p>Flow-control valves are simple screwdriver-adjustable needle valves that control air flow. Technicians can open a valve for more flow and dial it down for less air. The potential problem with flow-control valves is that operators and maintenance personnel may tinker with valve settings for on-the-fly adjustments to air flow. A change in flow may appear to make a machine run faster or perform better, but it can damage parts by increasing wear and even causing unexpected safety problems.</p> <p>Festo&rsquo;s GRLA-SA economical exhaust air-flow control valves provide an ingenious solution&mdash;a spring pin protects against the unauthorized resetting of volumetric flow rate. It is as simple as that.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/10-safety-products-every-pneumatic-tool-kit-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/pneumatic-valves/10-safety-products-every-pneumatic-tool-kit#comments Cylinders & Actuators Pneumatic Valves Tue, 09 Jun 2015 13:08:00 +0000 32851 at http://hydraulicspneumatics.com The Biggest Challenge Hydraulics Users Face Today http://hydraulicspneumatics.com/blog/biggest-challenge-hydraulics-users-face-today <div class="node-body blog-body"><p>Last week an engineer from a major international offshore drilling company, whose name you would instantly recognize, came to see me about training. And not the more commonly sought &#39;how- it-works&#39; training, but rather the &#39;how-to-stop-it-bleeding-money&#39; type of training. As you can imagine, this company has a LOT of hydraulic equipment working in harsh environments all over the world. And this client frankly admitted they aren&#39;t on top of its proactive maintenance. The mind boggles.<br /> <br /> When this sort of thing happens I get a warm glow inside. Because it validates what I&#39;ve been banging on about all these years. A lot of hydraulic equipment users - large and small - are in the same boat, but most are either unwilling or unable to recognize it. I&#39;m not sure which. So when a company as large as this one says: &quot;Hey, there&#39;s a lot of money floating around here and if we smarten up, some of it will flow to our bottom line!&quot; it&#39;s professionally satisfying from my perspective.<br /> <br /> Of course, the bigger the hydraulic equipment user the bigger the opportunity. AND the bigger the challenge. Because there&#39;s more equipment and a bigger variety of it, and many more people involved, both at the &#39;coal face&#39; and at each level in the hierarchy. Still, it can be done. But where do you start?<br /> <br /> As I explained to this client, start by chunking the project down into manageable pieces. This could be a single piece or category of equipment, or a single drilling rig in their case. This makes the task of getting the operating variables right, and the necessary people, know-how and procedures in place, a hellava lot easier. It also greatly increases chances of success. And small successes are not only essential in a corporate environment - they&#39;re also repeatable and scalable.<br /> <br /> So how will this client go? Honestly, it&#39;s too early to tell. It won&#39;t happen unless it&#39;s endorsed from up high and will struggle to succeed unless there&#39;s genuine buy-in from the front-line troops. Which is why if you&#39;re a smaller hydraulic equipment user or someone who works for one, you have a definite advantage when it comes to getting your &#39;house&#39; in order.<br /> <br /> And if you&#39;d like some ideas, <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=thmh"><strong>The Hydraulic Maintenance Handbook</strong></a> is choc full of the &#39;how-to-stop-it-bleeding-money&#39; type of know-how I&#39;ve been talking about here. If you own hydraulic equipment, or are responsible for its upkeep, it&#39;s worth your serious consideration. At the very least, to discover six costly mistakes you want to be sure to avoid with your hydraulic equipment, <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=smr">get &quot;Six Costly Mistakes Most Hydraulics Users Make... And How You Can Avoid Them!&quot; available for FREE download here</a>.</p> </div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div> http://hydraulicspneumatics.com/blog/biggest-challenge-hydraulics-users-face-today#comments Hydraulics At Work Mon, 08 Jun 2015 22:33:00 +0000 32841 at http://hydraulicspneumatics.com Controls Squeeze Performance from Grape Harvesters http://hydraulicspneumatics.com/agricultural/controls-squeeze-performance-grape-harvesters <div class="field-byline"> Jeff Herrin, Danfoss Power Solutions </div> <div class="field-deck"> Grape and olive harvesting often involves steep slopes on wet ground—conditions that push traction control to its limits. Oxbo International answers this challenge with an electrohydraulic control system that eases the burden on operators while also conserving fuel. </div> <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/controls-squeeze-performance-grape-harvesters-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Industry standards for grape-harvesting equipment have changed dramatically over the centuries-long history of wine production. In many cases, technology has replaced manual harvesting, but steep, mountainous slopes, narrow rows of vines, and widely varying picking requirements continue to challenge engineers building today&rsquo;s vineyard machinery.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Lead-036.gif" style="width: 595px; height: 397px;" title="Oxbo’s 6000 line of grape and olive harvesters relies on a Danfoss Plus+1 control system to control speed, torque, and power to drive wheels for maximum traction control, precise regulation of speed, and high fuel efficiency." /></p> <p>One industry-leading manufacturer, <a href="http://oxbocorp.com" target="_blank">Oxbo International</a>, Lynden, Wash., draws on nearly 20 years of experience designing and developing advanced grape harvesters that tackle these unique conditions for international customers. The Oxbo 6000 line of grape and olive harvesters is its most advanced line of vineyard harvesters to date. This family of three four-wheeled machines leverages the latest advances in electronic-control technology and hydraulic solutions to ensure safe and efficient operation in demanding vineyard conditions.</p> <p>Primarily used in the California grape industry, machines in the 6000 line are designed to operate in settings that range from hot, high-yield areas with wide 11-foot row spacing, and low-yield, sloping areas (sometimes 30% grade or steeper) with tight 6-ft row spacing.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-amp-motors/all-hydraulic-harvester-pampers-potatoes">All-Hydraulic Harvester Pampers Potatoes</a></p> <p><a href=" http://hydraulicspneumatics.com/agricultural/traction-king-grape-harvester">Traction is King on Grape Harvester</a></p> <p><a href=" http://hydraulicspneumatics.com/agricultural/hydrostatic-drive-berry-precise">Hydrostatic Drive Is &quot;Berry&quot; Precise</a></p> </div> <p>Tom Vander Wilt, an Oxbo design engineer who has worked on the 6000 line since its inception, says, &ldquo;There are so many different models required for different vineyard configurations that a major challenge was to create this family of machines that can use the same hydraulic, control, and basic frame systems.&rdquo;</p> <p>A successful harvester that operates in this range of circumstances needs hydraulic components that withstand heavy use and offer integrated electronic-control compatibility to ensure safe and efficient ground drive operation. Such components must also be flexible enough to adapt to specific customer needs and react to variable operating conditions.</p> <p><strong>Learning from the past</strong></p> <p>In 1998, Korvan, which would later become part of Oxbo International, built its first grape harvesters. The original three-wheeled model, the 3016, is still popular today, and the 6000 line models are built on the success and knowledge gained from this original machine.</p> <p>The model 3016 used a manually controlled variable-displacement pump from <a href="http://powersolutions.danfoss.com" target="_blank">Danfoss Power Solutions</a>, Ames, Iowa, and analog controls. A joystick, switches, levers, and simple readouts were used to control and monitor the machine, requiring a great deal of operator involvement. Although this early machine performed well on hills and featured a particularly high-quality picking and cleaning mechanism, traction control was identified as an area that needed improvement.</p> <p>The 3016 required splitter valves for traction control. These systems worked well when used for temporary traction needs, such as getting out of a patch of mud. But relying on these valves during the sustained vineyard inclines wasted power (fuel) and created heat that adversely affected the hydraulic system.&nbsp; Vehicle operators would manually destroke the front wheel motors when going uphill or the back wheel motors when going downhill to put them into high&ndash;speed, low-torque range.</p> <p>After becoming part of Oxbo International in the mid 2000s and assessing the future of the machines, officials knew that vineyard managers expected more electronic-control options and more advanced traction control. By this time, competitive machines began to deliver both.</p> <p><strong>Developing a new hydraulic ground drive </strong></p> <p>The first step toward addressing concerns about traction control and electronic control was to overhaul the hydraulic ground drive for the 6000 line. After assessing the competitive market and considering customer performance and efficiency expectations, Oxbo, with help from <a href="http://www.bfpna.com" target="_blank">Berendsen Fluid Power</a>, Seattle, Wash., and Danfoss Power Solutions, began to overhaul its ground drive system, moving from a three- to four-wheel setup. However, making this happen wasn&rsquo;t as easy as simply adding a second axis.</p> <p>Vineyard harvesters feature a tall tunnel (about 7 ft.) and can range in width from 2.5 to 5.25 ft. through the middle of the machine, where collection, cleaning, and sorting mechanisms are housed. Operators must navigate safely and consistently through rows of vines at speeds ranging from 1 to 3 mph, making sure trellises holding the crop run through the harvester&rsquo;s tunnel.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/H1-45cc-53cc-Tandem-Pump.gif" style="width: 350px; height: 268px; float: left;" title="All-wheel-drive for the 6000-line harvesters is provided by a Danfoss H1 53cc/53cc pump, which sends half its flow to the front wheels and the other half to rear wheels." /></p> <p>Owning to the design of the machine, each wheel is controlled by individual Danfoss M46 variable-displacement motors, with optional Danfoss H1 variable displacement motors for higher tractive effort. To configure these motors, Oxbo engineers specified a Danfoss tandem H1 53cc/53cc pump, with one half providing oil flow to the front wheel motors and the other controlling oil flow to the rear wheel motors. The remaining functions, such as steering, picking head, conveyor belts and cleaning fans, are controlled using an open-loop system powered by a Series 45 axial-piston pump.</p> <p>Having worked with Danfoss components in the past, Oxbo engineers were familiar with their performance and came away impressed with their efficiency when testing the redesigned ground control system. In addition, the support and availability of Danfoss products meant Oxbo could have their machines ready for testing quickly, which shortens product-development cycles.</p> <p><strong>Integrating Plus+1 controls</strong></p> <p>After focusing on the hydraulic side and developing the new version of the ground drive system, Oxbo turned its attention to electronic-control options. Most Danfoss components are Plus+1-compliant, so the first version of this updated system used Danfoss Plus+1 electronics for automatic height control. Although this was just the beginning for this product line, Oxbo engineers continued to introduce additional electronic controls as they explored the capabilities of Plus+1.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/IMG_4816.gif" style="width: 350px; height: 467px; float: left;" title="The Danfoss Plus+1 system not only controls hydraulic functions, but monitors operating conditions and provides the operator with easy-to-read displays and fingertip control. " /></p> <p>With Danfoss Plus+1, engineers have the flexibility to develop software unique to their needs.&nbsp; Using Guide, a Plus+1 graphical software-development tool, developers don&rsquo;t have to write code. Rather, they only need to drag and drop graphical components to come up with a representation of the control logic of the machine.&nbsp;</p> <p>&ldquo;Plus+1 enables engineers who understand how the machine should work to develop the machine&rsquo;s software,&rdquo; explained Christian Daley, Senior Systems and Application Engineer for Danfoss. &ldquo;This can dramatically reduce the development time of new machines.&rdquo;</p> <p>Focusing on how performance might change during operation, such as when driving around corners or over hills, Oxbo engineers began to identify the necessary inputs to consider for maximum machine efficiency and performance. Once these were identified, Oxbo engineers developed a power-efficient operating system for the harvesters. The previous analog system limited the operators&rsquo; control over the harvester.</p> <p><strong>Benefits from upgrades</strong></p> <p>Implemented across the Oxbo fleet of vineyard harvesters, the current Plus+1-developed operating system gives the operator control over a much broader set of machine features, and takes some of the guesswork out of maximizing machine control for the most efficient operation. The Oxbo 6000 product line utilizes Danfoss electronic controls that include 50-pin controllers, I/O expanders, and a DP700 display, making machine control intuitive to the operator.</p> <p>In today&rsquo;s vineyard harvesters, the Plus+1-integrated hydraulic system offers control over end-user functions such as automatic height and leveling control, automatic picking head speed control, automatic steering control, and ground drive speed control. These capabilities are expected to expand.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/S45-Pump.gif" style="width: 350px; height: 369px; float: left;" title="A Danfoss Series 45 pump delivers hydraulic power to all non-ground drive functions of the 6000 harvester line: steering, picking, conveyors, and cleaning fan motors." /></p> <p>In addition to the Plus+1 system&rsquo;s end-user applications, the electronic controls also allow for more efficient and standardized production and service. The compatibility between the Danfoss hydraulic products, used in the ground drive and electronic-control systems, and Plus+1 programming environment enables &ldquo;plug-and-play&rdquo; production. Rather than create custom code for each machine, engineers can utilize the Plus+1 library of applications to draft and apply software across a wide range of harvesting vehicles. In addition, Plus+1 allows for automated calibration sequences that would otherwise be manual, variable, and incredibly time-consuming.</p> <p>Oxbo&rsquo;s Vander Wilt added, &ldquo;To calibrate accurate wheel speeds manually, a technician must watch for wheel movement. Different people have different perceptions of what that movement looks like, and this can lead to inconsistent calibrations from machine to machine. Calibrating wheel speeds using the Plus+1 system allows consistently high performance across the fleet of machines.&rdquo; This type of calibration is necessary for high-performance end-user operation.</p> <p><strong>Additional benefits</strong></p> <p>Service has also benefited from the implementation of the Plus+1 system. Berendsen and Danfoss were able to help with aspects of system design to simplify service, and due to the availability of Danfoss products, Oxbo can minimize harvester downtime. Even in the case of machine malfunction or breakdown, Plus+1-produced code automatically generates error codes, which helps more efficiently service or repair the harvesters.</p> <p>From production to operation to repair, the integration of Plus+1 controls and hydraulic components in the Oxbo 6000 line of vineyard harvesters helps increase efficiency and reliability. The line has been in production since 2010, with the newest addition, the 6120, released in 2014.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/controls-squeeze-performance-grape-harvesters-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p><em>Jeff Herrin is Vice President, Research &amp; Development, Danfoss Power Solutions, Ames, Iowa. For more information, call (515) 239- 6000 or visit <a href="http://powersolutions.danfoss.com" target="_blank">powersolutions.danfoss.com</a>.</em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/agricultural/controls-squeeze-performance-grape-harvesters#comments Agricultural Controls & Instrumentation Mon, 08 Jun 2015 20:49:00 +0000 32821 at http://hydraulicspneumatics.com Hydraulic-Electric Analogies: Power Sources, Part 3 http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-power-sources-part-3 <div class="field-deck"> The analogous nature of hydraulic systems and their electrical counterparts can be compared and contrasted by examining motors and power conversion. </div> <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/hydraulic-electric-analogies-power-sources-part-3-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>Alternators are ac generators. They convert mechanical power into alternating-current electrical power. The term generator creeps into the language of ac circuits and systems. Technically, though, the term <em>generator</em> is reserved for dc power generation, while <em>alternators</em> apply to ac power generation. On the other hand, there is NO confusion when people refer to alternators as &ldquo;ac generators,&rdquo; so indignation would be misplaced when using that term, even in polite conversations.</p> <p>All electrical generating devices will function as either generators or motors. This is true of both ac and dc machines, but the discussion here concerns ac devices. If the synchronous motor <em>(Fig. 9)</em> described in <a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-power-sources-part-2" target="_blank">last month&rsquo;s article (Part 2)</a> was powered mechanically through its shaft and some load, say, a light bulb, was connected to one of the phase coils, the bulb would glow given that there&rsquo;s enough mechanical power available.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/07/0615_MotCtrl_F9-big.gif"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/07/0615_MotCtrl_F9-small.gif" style="width: 595px; height: 229px; " title="9. In this two-phase, two-pole, ac-powered motor, the two stator windings produce a magnetic field that rotates synchronously with the frequency of the ac supply voltage. Following that is the magnetized rotor synchronized with the rotating field, but lagging by a “lag angle” when load torque is applied. (For simplicity, windings and external circuits were omitted.)" /></a></p> <p>The alternator relies on Faraday&rsquo;s EMF law. The spinning rotor field &ldquo;cuts through&rdquo; the stator coils and their relative motion induces a voltage. Figure 2 from <a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-power-sources-part-1" target="_blank">Part 1 of this discussion (April issue)</a> depicted a machine with its rotor magnetized and spinning counter-clockwise. A vertical coil generated a cosine wave, while a horizontal coil, when rotated, generated a sine wave. In other words, it was a two-phase alternator. It could be used as the two-phase ac power source for the aforementioned motor.</p> <p>In the motor, the rotor lags behind the stator field rotation. Energy is converted from the electrical realm and converted to torque and speed to drive a mechanical load. In the alternator, the mechanical input power causes the rotor to get ahead of the stator field. As a result, energy is delivered from the torque and speed and converted to voltage and current power out of the electrical coils.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-power-sources-part-2">Hydraulic-Electric Analogies: Power Sources, Part 2</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-power-sources-part-1">Hydraulic-Electric Analogies: Power Sources, Part 1</a></p> <p><a href="http://hydraulicspneumatics.com/reservoirs-accessories/hydraulic-electric-analogies-reservoirs-and-grounds">Hydraulic-Electric Analogies: Reservoirs and Grounds</a></p> <p><a href="http://hydraulicspneumatics.com/accumulators/hydraulic-electric-analogies-capacitors-and-accumulators-part-3">Hydraulic-Electric Analogies: Capacitors and Accumulators, Part 3</a></p> <p><a href="http://hydraulicspneumatics.com/accumulators/hydraulic-electric-analogies-capacitors-and-accumulators-part-2">Hydraulic-Electric Analogies: Capacitors and Accumulators, Part 2</a></p> </div> <p>An interesting thought experiment is to ponder the actions in one of the power company&rsquo;s many windmills dotting the countryside. When the wind blows with sufficient power, the windmill blades convert the aerodynamic energy into mechanical energy, which then turns the alternator shaft to generate ac voltage and current. The rotor will be leading the stator field.</p> <p>Consider, though, what would happen if the wind died down and didn&rsquo;t act on the windmill blades (called &ldquo;sails&rdquo; by those engaged in wind energy harvesting). Under such a condition, there&rsquo;s no torque on the rotor. However, if the machine is still connected to the power grid, other alternators, such as those powered by coal-fired furnaces and boilers, would supply electrical power to the machine. Thus, it would operate as a motor, powering the sails mechanically and turning the machine into a big fan. In low-wind conditions, therefore, the windmill must be electrically disconnected from the greater electrical power grid to prevent energy flow into the fan.</p> <p>Large capacity synchronous motors (e.g., those rated at more than a few kilowatts) don&rsquo;t use permanent magnets for their rotors. Instead, they incorporate electromagnets, which necessitates the conduction of some electric power into the rotor via slip rings and brushes. Slip rings are simple conducting rings that attach to, and spin with, the rotor, but are electrically insulated from the machine shaft.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/07/0615_MotCtrl_F10.gif" style="width: 350px; height: 348px; float: left; margin-left: 2px; margin-right: 2px; " title="10. The rotor of the “squirrel cage” induction motor consists of a laminated rotor structure with slots. The conductors are placed into the slots and capped off on each end with shorting bars." />&nbsp;</p> <p>Each coil has two slip rings to carry current in and provide for the needed return path. They are in intimate, sliding contact with stationary conducting brushes, often made of graphite due to its electrical conductivity and its low abrasion, while continuously rubbing against the slip rings. The brushes and slip rings allow an electrical connection between the rotating world of the rotor and stationary external world.</p> <p>Alternators are used in all modern automobiles, trucks, and other mobile equipment. They have become practical since the 1960s due to the development of large-capacity, reliable, and inexpensive diodes to convert the alternating current into direct current. Most automotive alternators are of the three-phase variety.</p> <p><strong>Induction Motors</strong></p> <p>The most ubiquitous type of motor is the induction motor, which can be found in homes and industries across the world. They take advantage of the rotating field created by the stator windings, as is the case with the synchronous motors, but with a less-complex structure. Induction motors are to the electromechanical world what hydraulic cylinders are to the hydromechanical world. They differ in their motion; the former produces rotational motion and the latter produces linear motion.</p> <p>Given that the induction motor uses a rotating field for its ultimate propulsion, its stator will be similar to that of the synchronous motor, except that it will most likely be three-phase, not two-phase. Regardless, the rotor construction consists of a series of ferromagnetic laminations mounted on a shaft <em>(Fig. 10)</em>. The laminations are electrically isolated from one another with lacquer or varnish coatings to minimize eddy-current heating in the iron.</p> <p>The term &ldquo;squirrel cage&rdquo; comes up because of the way that the rotor conductors are arranged. The isolated conductor cage is also shown in Figure 10. In the final rotor assembly, the individual conductors will be inserted into their respective slots in the laminated rotor.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/07/0615_MotCtrl_F11.gif" style="width: 350px; height: 216px; float: left; margin-left: 2px; margin-right: 2px; " title="11. Shown is the rotor assembly for the induction motor, with the conductors in their slots and the shorting bars on the rotor ends." /></p> <p>In the rotor pictured, 12 conductors are in the squirrel cage and 12 slots are in the laminations to receive the conductors. When assembled <em>(Fig. 11)</em>, the composite rotor is round and generally quite smooth because the conductor cage surrounds the laminations and helps hold the assembly together. The conductors are held together with shorting bars on each end of the cage. In the functioning motor, currents are induced into the rotor conductors. The currents are allowed to &ldquo;circulate&rdquo; by virtue of the shorting bars.</p> <p>The rotating stator&rsquo;s magnetic field penetrates and exits the rotor radially and approximately, in line with the stator field&rsquo;s central axis as shown in the synchronous motor <em>(Fig. 9, again)</em>. In the induction motor, the field&rsquo;s rotational motion is transverse to the squirrel-cage conductors, and the relative speed between the two results in an induced voltage. The induced voltage causes a current in the very-low-resistance squirrel-cage conductors; that current can be very high because the rotor shorting bars enhance the current buildup.</p> <p>Once the polyphase stator is energized, the field immediately accelerates to synchronous speed. The rotor, with its iron laminations and attendant inertia, is stopped. The relative speed reaches high levels, inducing a high current in the rotor conductors. What&rsquo;s interesting is the induced rotor current creates its own magnetic field of 90&deg; displaced from the rotating stator field, resulting in a very high torque on the rotor. The rotor quickly accelerates, trying to catch up to the spinning stator field, i.e., synchronous speed, no matter the amount of poles. Polyphase induction motors have a natural ability to start because of the torque created when the rotor and rotating fields maintain different speeds.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/hydraulic-electric-analogies-power-sources-part-3-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-power-sources-part-3#comments Hydraulic Pumps & Motors Mon, 08 Jun 2015 19:33:00 +0000 32801 at http://hydraulicspneumatics.com Weather-Resistant Valves Give Buses a Lift http://hydraulicspneumatics.com/pneumatic-valves/weather-resistant-valves-give-buses-lift <div class="field-byline"> Paxton Augustine, Parker Hannifin </div> <div class="field-deck"> The harsh winter of 2014-2015 brought many of us to our knees, but city buses fitted with pneumatic-valve control modules designed for these harsh conditions proved more than a match for Old Man Winter. </div> <div class="node-body article-body"><table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/weather-resistant-valves-give-buses-lift-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>The Americans with Disabilities Act states that public transit authority and school district vehicles must be accessible to people with disabilities. Original equipment manufacturers (OEMs) believe kneeling (lowering and raising of the bus&rsquo;s floor) could be key to meeting that mandate, so much so that they&rsquo;re now equipping their vehicles with kneeling capabilities, making it easier for passengers to climb aboard.</p> <p>Since this mandate went into effect for 100% of all fleets a couple of years ago, these past winters have taught OEMs the importance of specifying control modules for kneeling functions. Not only must they be durable, compact, and lightweight, but they have to withstand harsh winters like this past one.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Snowbound-bus-%28LEAD%29.jpg" style="width: 595px; height: 372px;" title="The record cold and snowfall of this past winter certainly posed challenges for commuters. But pneumatic systems were also under the gun. Valve modules that control the lowering and raising of kneeling buses were especially susceptible, unless they were designed to handle extreme ambient conditions." /></p> <p>The control modules are tasked with deflating flexible air actuators on demand, quickly lowering a bus to ease passenger entry, and subsequently inflating the actuator at a similar pace, enabling the bus to resume its scheduled route.&nbsp; Control modules are designed for OEM installation on new vehicles, as well as for retrofitting on older vehicles.</p> <p>The challenges faced by fleet owners this past winter have made these modules the centerpiece of accessible vehicle equipment. Buses in major cities make hundreds of stops per day, and the actuators must lower and raise the bus floor at every stop. Throw in the record snowfalls and extended below-freezing temperatures, and a strong potential exists for schedule delays and added difficulty for passengers entering and exiting the buses. When circumstances are severe enough to cause control-module failure, physical limitations may prevent some passengers from being able or allowed to board a bus for their own protection.</p> <p><strong>What can go wrong </strong></p> <p>The two most common failure modes for control modules are lifecycle failures and leakage failures.&nbsp; A <em>lifecycle</em> failure, the most extreme failure mode, occurs when the module does not perform as required.&nbsp; This can be caused by solenoid failure, poppets or spools sticking, or a broken spring. Many transit authorities and fleets will disable the vehicle&rsquo;s kneeling function as a result of continual inconsistent performance.&nbsp;</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/pneumatic-valves/ceramic-air-valves-stand-dirt">Ceramic Air Valves Stand Up to Dirt</a></p> <p><a href=" http://hydraulicspneumatics.com/fittings-couplings/making-air-tight-connections">Making Air-Tight Connections</a></p> <p><a href=" http://hydraulicspneumatics.com/pneumatic-valves/pneumatic-directional-control-valves">Pneumatic Directional-Control Valves</a></p> </div> <p>In the case of <em>leakage </em>failure, the module continues to perform, but the leaking compressed air wastes energy.&nbsp; This is considered a secondary failure mode because it&rsquo;s less severe.&nbsp; Leakage failures can result in excessive noise either at the point of the leak, or quite often from the air compressor running almost constantly to maintain system pressure. The noise is certainly an issue for the driver and passengers. More importantly, though, the load placed on the engine by the extended operation of the compressor wastes fuel and increases maintenance costs. Chronic leakage failures can often escalate to more severe lifecycle failures.</p> <p><strong>Failure causes</strong></p> <p>Extreme temperature, contamination (both dirt and moisture), and vibration are the most common causes of failure. Bus manufacturers and fleet owners in many parts of the country know they must prepare their equipment for operation within a wide range of temperatures because both high and low temperatures can lead to failure. High temperatures may cause seals to soften and wear too quickly.&nbsp; Solenoids failures can also occur from overheating if the control module is exposed to temperatures exceeding 100&deg;C.</p> <p>Leakage and lifecycle failures from low temperatures are much more common. Kneeling systems must be able to meet the industry-standard requirement of performance at &ndash;40&deg;F.&nbsp; When temperatures approach or exceed this extreme, seals begin to harden and stick, preventing valves from shifting. Hardened seals are also more susceptible to being cut as the valve operates, creating leakage through the seal.&nbsp; Eventually, the damage will worsen to the point of causing a lifecycle failure. Seal shrinkage due to extreme cold can also prevent the valve from sealing properly, again resulting in a leakage failure.</p> <p>If a pneumatic kneeling system does not incorporate an air dryer, or an existing dryer is not properly maintained, moisture entrained in the compressed air can cause lifecycle failures, too.&nbsp; In addition, since water in the air freezes at temperatures below 32&deg;F (0&deg;C), valves within the control module may not be able to shift.</p> <p>Regardless of a module&rsquo;s ability to operate in extreme temperatures, an effective system must be provided and maintained to dry the system&rsquo;s compressed air.&nbsp; If moisture is not removed from compressed air, it will condense as liquid in the lines, causing line and component damage upon freezing. Even without freezing, water in the compressed air stream may wash away needed lubricants in cylinders and valves, triggering equipment malfunctions and premature component failure.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/2015.06-TechPneus.jpg" style="width: 595px; height: 356px;" title="Poppet valves in this valve module prove more suitable than spool valves when it comes to the conditions typically found with transportation applications. The single-piece module assembly is easy to install and resists attack from corrosion, dirt, and moisture. " /></p> <p>Although not as severe a factor as extreme temperatures, contamination is another leading source of kneeling control-module failure on buses.&nbsp; Contamination from weather and environmental conditions causes damage and potential failure to both the external and internal components of a control module.&nbsp; Dirt, dust, water, salt, and other debris can eventually lead to extensive damage and leakage failures. Therefore, it&rsquo;s absolutely critical to design a system that will protect the module against these harsh elements.</p> <p>Internal corrosion is usually caused by contamination from water or degraded oil from the system&rsquo;s compressor.&nbsp; Such contamination can often produce more severe lifecycle failures. Oil from components of the air system may also damage the module as it reacts with other internal components.&nbsp; Seals suffer the most significant damage because chemical reactions can impair seals significantly, thus reducing the life of the entire control module.</p> <p>Finally, if not designed properly into a product, fasteners, springs, connectors, fittings, and other components can become loose or suffer premature fatigue failure due to forces generated from shock and vibration.</p> <p><strong>The sum of a module&rsquo;s parts</strong></p> <p>Several design and construction characteristics directly contribute to the ability of buses to kneel and rise through the toughest conditions. A single-piece anodized body should be at the core of a control module&rsquo;s design. An aluminum body provides light weight and corrosion resistance, and an anodized finish adds further protection from corrosion and wear.</p> <p>A single-body design also offers the flexibility to build three- or four-station modules from identical components. On top of that, a one-block design has a single bolt-hole pattern, which simplifies installation and replacement. Ultimately, it reduces parts and labor cost in the field due to fewer components and connections. Fewer connections also mean fewer leak paths than with multiple assemblies.&nbsp;</p> <p>The valve design strongly influences the life and performance of the control module. The poppet assembly is also the most affected by temperature, contamination, and vibration, and thus the most vulnerable component of the module. An over-molded poppet valve design suits harsh environments better than a spool design. And, of course, a valve design with fewer components reduce the risk of failure.&nbsp;</p> <p>Low-temperature dynamic O-rings, used in conjunction with low-temperature grease, allow a module to operate at harsh transportation environments.&nbsp; Two O-rings combined with a precision-ground poppet ensures that the module will withstand the temperature extremes and corrosive environments typically encountered by city buses.</p> <p>Exhaust protectors act similar to a check valve&mdash;they permit unrestricted exhaust air flow while preventing the ingression of ambient air. This blocks external contaminants and moisture from entering the module through the exhaust port.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"><img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"><a href="/datasheet/weather-resistant-valves-give-buses-lift-pdf-download">Download this article in .PDF format</a><br /> This file type includes high resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p>The solenoid and pilot operator should both be temperature-rated to &ndash;40&deg;F to +158&deg;F (&ndash;40 to +70&deg;C) and have voltage characteristics of &plusmn;30% of rated voltages.&nbsp; Additionally, to ensure the ruggedness of the pilot operators, they should have a maximum pressure rating of 232 psig (16 bar).</p> <p><em>Paxton Augustine is Product Marketing Manager at Parker Hannifin&rsquo;s Pneumatic Div., Richland, Mich. For more information, call (269) 629-5000 or visit <a href="http://www.parker.com/pneumatic" target="_blank">www.parker.com/pneumatic</a>.</em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/pneumatic-valves/weather-resistant-valves-give-buses-lift#comments Rail, Truck & Bus Pneumatic Valves Mon, 08 Jun 2015 18:51:00 +0000 32781 at http://hydraulicspneumatics.com Raymond F. Hanley, Champion for Fluid Power Certification http://hydraulicspneumatics.com/news/raymond-f-hanley-champion-fluid-power-certification <div class="node-body article-body"><p>Raymond F. Hanley passed away Saturday, May 30, 2015 at the age of 89. He was born February 10, 1926 in Altoona , Pa and died at the Earl Hadlow Community Hospice Center in Jacksonville, Fla.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/RFH%20photo_0.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/RFH%20photo_0.jpg" style="width: 222px; height: 325px; float: right; margin-left: 4px; margin-right: 4px;" /></a>He entered the Navy in 1943 and was assigned to the <em>USS McGinty</em>, a destroyer escort in the South Pacific.&nbsp; Ray&rsquo;s duties on the ship included ship&rsquo;s photographer, mailman, and helmsman.&nbsp; His primary duty on the ship was anti-submarine warfare, which included operation of a 50-caliber machine gun.</p> <p>After his discharge in 1946, Hanley earned a Bachelor&rsquo;s of Science degree in Mechanical Engineering in 1949 from the University of Pittsburgh. He then landed a job in the industrial pneumatics division of Westinghouse Airbrake Co.&nbsp; Following initial training at the company, Ray was transferred to Dallas, where he designed pneumatic systems for controlling large engines, railroad locomotives, offshore drilling rigs, cruise liners, and cargo vessels.</p> <p>While in Texas, Hanley was promoted to District Sales Manager, covering 11 states and western Canada. He met Ercel Dean Thomas in Dallas, and they married in 1950.&nbsp; He was promoted to Regional Sales Manager in 1956 and moved to Arlington, Va.</p> <p>Within a few years, he went into business with his brother to form Circuit Engineering, a full-service fluid power distributorship in Jacksonville. He retired from Circuit Engineering in 1996.</p> <p>Hanley joined the Fluid Power Society in 1960 and served on the Board of Directors in 1984 and was President in 1986 and 1987. As a business owner, he understood the importance of training his staff in the technical intricacies of fluid power.&nbsp; He encouraged the Fluid Power Society to adopt a certification program to educate staffs on the importance of proper procedures for effective and efficient hydraulic systems. The Fluid Power Certification Program began through a generous initial contribution by Mr. Buck Charleson of Minnesota, inventor of the orbit motor, and the determination of Ray Hanley.</p> <p>Hanley also served multiple terms as Vice President of Certification and became an honorary director of the International Fluid Power Society in 2006. His continuing contribution to IFPS Certifications and their accompanying study manuals led to Hanley being named the first and only IFPS Emeritus Certificate holder to date. He authored two books, <strong><a href="http://www.ifps.org/docs/store/fluid_power_society_books/default.aspx#Math" target="_blank"><em>Fluid Power Math for Certification</em></a></strong> and <a href="http://www.ifps.org/docs/store/fluid_power_society_books/default.aspx" target="_blank"><em>Fluid Power Essential Practices</em></a>.</p> <p>The Raymond F. Hanley Scholarship was established by the IFPS in 2014 and will be awarded to a high-caliber student pursuing his or her post-secondary education in fluid power. The endowment is administered by the Fluid Power Educational Foundation.</p> <p>Hanley was preceded in death by his wife, Ercel, sister Virginia Mattern, and brothers, William &ldquo;Bill&rdquo; Hanley and Arnold &ldquo;Bud&rdquo; Hanley. He is survived by his eight children and several grandchildren, great grandchildren, nieces and nephews.</p> <p>The family suggests contributions be made to the <strong><a href="http://communityhospice.com/for-donors-and-volunteers/ways-to-give.aspx" target="_blank">Northeast Florida Community Hospice</a></strong>, Jacksonville or the The Raymond Hanley Certification Endowment Fund, c/o the International Fluid Power Society.</p> <p>Hanley&rsquo;s personal obituary can be found at: <strong><a href="http://communityhospice.com/for-donors-and-volunteers/ways-to-give.aspx" target="_blank">http://www.arlingtonparkfuneralhome.com/tribute/details/11291/Raymond_Francis_Hanley/obituary.html#tribute-start</a></strong></p> <p>&nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/raymond-f-hanley-champion-fluid-power-certification#comments News Mon, 08 Jun 2015 17:30:00 +0000 32771 at http://hydraulicspneumatics.com Remembering the Henry Ford of Fluid Power http://hydraulicspneumatics.com/news/remembering-henry-ford-fluid-power <div class="node-body article-body"><p>It&rsquo;s graduation time, and all across America, dignitaries are giving speeches telling graduates to make a difference and change the world. Changing the world might be a bit overly ambitious, but each of us can certainly make a difference in our part of the world.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/RFH%20photo.jpg" target="_blank"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/RFH%20photo.jpg" style="width: 222px; height: 325px; float: left; margin-left: 4px; margin-right: 4px;" title="Courtesy International Fluid Power Society." /></a>Someone who made a difference in the fluid power world was Ray Hanley. I refer to him in the past tense because Ray died May 30, what many still consider the &ldquo;real&rdquo; Memorial Day, originally Decoration Day. Ray was a U.S. Navy veteran of World War II, and although his death on May 30 was merely a coincidence, it seems rather fitting.</p> <p>Like many from America&rsquo;s Greatest Generation, Ray was an ambitious young man upon his Honorable Discharge from the Navy. More than 20 years ago,&nbsp; he told me how he got started in fluid power technology shortly after his discharge. He worked on oil field equipment in the Pittsburgh area and became responsible for hydraulics when his predecessor took on another position. Ray was appointed the &ldquo;hydraulics expert&rdquo; mainly because he had done &ldquo;a little work in pneumatics,&rdquo; in his words. He may have been reluctant to accept such a sink-or-swim proposition, especially because he viewed his position at the time as sort of an interim job, rather than a career. But with thousands of returning soldiers and sailors looking for work, he figured he&rsquo;d better seize the opportunity&mdash;at least until something better came along.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/news/raymond-f-hanley-champion-fluid-power-certification">Raymond F. Hanley, Champion for Fluid Power Certification</a></p> <p><a href="http://hydraulicspneumatics.com/fluid-power-innovation-and-research-conference-fpirc">Fluid Power Innovation and Research Conference (FPIRC) </a></p> <p><a href="http://hydraulicspneumatics.com/blog/using-water-glycol-your-hydraulic-fluid">Using Water Glycol as Your Hydraulic Fluid?</a></p> </div> <p>After awhile, though, Ray developed a strong interest in fluid power&mdash;or, as he put it, &ldquo;got hooked.&rdquo; He was active in fluid power ever since, and I&rsquo;d consider him the Henry Ford of <strong><a href="http://ifps.org/docs/certification/default.aspx" target="_blank">Fluid Power Certification</a></strong>. Henry Ford didn&rsquo;t invent cars or the assembly line, but he brought the two together, and the mass production of cars has grown and evolved ever since. The same goes for Ray Hanley and fluid power certification.</p> <p>Ray Hanley didn&rsquo;t invent fluid power certification, but he and others saw the need to establish and measure a minimum level of competency not only in fluid power knowledge, but communication, technique, and procedure. Once Ray realized the benefits that certification would provide, he made it his personal mission to see that certification grew into every facet of fluid power technology. As a result, the International Fluid Power Society (IFPS) today offers certification for mechanics, technicians, engineers, system designers, and instructors, with others in the works.</p> <p>Ray could look back at these accomplishments with pride, but he would&rsquo;ve been the first to tell you that the success of IFPS Certification couldn&rsquo;t have happened without an enormous amount of hard work from many others. Instead, I think he would&rsquo;ve pointed to his eight children and many grandchildren as his way of making a difference in the world.</p> <p><strong><a href="/news/raymond-f-hanley-champion-fluid-power-certification" target="_blank">Click here</a></strong> to view our obituary about Ray Hanley or <strong><a href="http://www.arlingtonparkfuneralhome.com/tribute/details/11291/Raymond_Francis_Hanley/obituary.html#tribute-start" target="_blank">click here</a></strong> to view his personal obituary and leave a comment.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/remembering-henry-ford-fluid-power#comments News Mon, 08 Jun 2015 13:39:00 +0000 32761 at http://hydraulicspneumatics.com The Bitter-Sweet Nature of Proactive Maintenance http://hydraulicspneumatics.com/blog/bitter-sweet-nature-proactive-maintenance <div class="node-body blog-body"><p>I recently purchase a used SUV. And the plan is to do some touring with the family. Starting with a trip across the Nullarbor Plain from the west to east coast of Australia. It&#39;s a BIG trip. If you spend 12 hours a day in the car driving, you can cover the distance in four days.<br /> <br /> But the Nullarbor is a desolate place. There&#39;s not much out there. You&#39;re real lucky if you see a kangaroo or emu between gas stations. And they&#39;re hundreds of miles apart. It&#39;s certainly not somewhere you want to breakdown (even more unacceptable for me, being a preventative maintenance guy, and knowing if something lets go on the vehicle, I&#39;m REALLY going to cop it in the neck from the wife!).<br /> <br /> So to minimize the possibility of any nasty (and embarrassing) surprises in the middle of the desert, I took my newly acquired but pre-loved SUV down to the Automobile Association for a thorough workshop inspection. I dropped it off in the morning and when I arrived to collect it later that day, I could see it was still up on the hoist.<br /> <br /> I knew all was not well when the inspecting mechanic invited me out into the workshop. When we got underneath the vehicle the first thing he points to is a broken front diff mount. While I&#39;m thinking to myself: &quot;Wow... that&#39;s not very cool...&quot;, he shows me a lower front ball joint that&#39;s shot. Strike two. Now I&#39;m thinking: &quot;Enough already&quot;. Mercifully, there was no strike three.<br /> <br /> Of course, the ideal outcome from any maintenance inspection or proactive maintenance task is to find nothing wrong. But on the other hand, the discovery of a defect or cause for alarm totally vindicates performance of the task. It&#39;s a bitter-sweet outcome.<br /> <br /> And since the above issues are not the sort of problems you can fix on the side of the road with only a fistful of ring spanners, ignorance is NOT bliss. So based on the philosophy of a stitch in time saves nine, the $185 I proactively invested to have my SUV inspected potentially saved me thousands. And that&#39;s without considering the likely stress and inconvenience a breakdown would cause.<br /> <br /> The other thing this story illustrates is, what you do by way of proactive and predictive maintenance is at least in part determined by the cost and consequences of failure. Of course, any piece of mechanical equipment can break down at any time. So stay tuned for my road-trip report from the East Coast.<br /> <br /> Meanwhile, your mission should you choose to accept it, is to determine what you should be doing by way of proactive maintenance for the hydraulic equipment you own or are responsible for. And make sure it&#39;s all up to date. Also, to discover six costly mistakes you want to be sure to avoid with your hydraulic equipment, <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=smr"><strong>get &quot;Six Costly Mistakes Most Hydraulics Users Make... And How You Can Avoid Them!&quot; available for FREE download here</strong></a>.<br /> &nbsp;</p> </div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/hydraulics-work">Hydraulics At Work</a></li> </ul></div> http://hydraulicspneumatics.com/blog/bitter-sweet-nature-proactive-maintenance#comments Hydraulics At Work Tue, 02 Jun 2015 00:21:00 +0000 32741 at http://hydraulicspneumatics.com