Hydraulics & Pneumatics - Hydraulics & Pneumatics is the leading international technical resource for fluid power http://hydraulicspneumatics.com/rss.xml en An Unusual Hydraulic Pump Problem http://hydraulicspneumatics.com/blog/unusual-hydraulic-pump-problem <div class="node-body blog-body"><p>Recently I was involved - in a supervisory capacity - in the planned change out of components on a hydraulic machine. The design of the machine&#39;s hydraulic power unit was the all-too-common, cheap and nasty, everything mounted on the tank lid variety. You know the ones - electric motor mounted vertically, with pump submerged in the tank. They&#39;re cheap and easy to build, but an eternal pain in the butt for anyone who has to work on them. I could rant about this... but I&#39;ll save it for another day.<br /> <br /> The scope of work included changing out a tandem gear pump submerged in the tank. On this machine, a 15 minute job - AFTER you&#39;ve spent two hours disconnecting everything to enable the tank lid to be lifted. I was offsite when this pump was changed, but the technician doing the work was experienced and knew what had to be done. After the shut down was completed, the same technician was scheduled to re-commission the machine. But due to conflicting commitments he became unavailable.<br /> <br /> It was early in the afternoon when I got the call requesting I go to site to supervise start-up. Thinking this would be a case of push the button and watch everything behave as it should, I left the office in my &#39;civilian&#39; clothes, took my personal car and no tools. BAD mistake.<br /> <br /> Commissioning didn&#39;t begin well. The rear section of the tandem gear pump that had been replaced, charged an accumulator. But we weren&#39;t getting any charge pressure on start-up. The direction of rotation of the electric motor was correct. But what about the rotation of the new pump? Bit hard to tell when it&#39;s submerged in the tank.<br /> <br /> After speaking with the technician on my cell phone, I was reasonably confident the new pump&#39;s rotation was correct. But just to be sure, I decided to try reversing the rotation of the electric motor (not ideal BTW). No change.<br /> <br /> Now what? I don&#39;t have a flow-tester with me and it&#39;s a major job to lift the tank lid. It appears that new pump is either faulty or not priming. Unlike a vane pump which sometimes needs a head of oil on its outlet for the vanes to &#39;throw&#39; and start pumping, a gear pump is typically self-priming - especially when it&#39;s completely submerged in hydraulic oil.<br /> <br /> To give the new pump the best possible chance of priming, I topped off the oil level at maximum. Still no charge pressure after running for a minute. In the absence of a flow-meter, I decided to lift the electric motor off its bell housing, disconnect the pipes from the pump&#39;s outlet penetrations in the top of the tank and turn the pump by hand.<br /> <br /> This was revealing. The front section was pumping, but the rear section wasn&#39;t. Joy. The rear section was faulty. I continued turning the pump by hand, while I wondered what the chances were of this happening, and contemplated the work involved in lifting the tank lid.<br /> <br /> Just as I was about to give up and call for reinforcements, I noticed oil was being displaced from the rear pump&#39;s outlet penetration in the top of the tank. It WAS pumping. I reconnected the plumbing, dropped the electric motor back into position and bingo. We had accumulator charge.<br /> <br /> It seems the pump&#39;s rear section was &#39;air-bound&#39;. Had I been told this story about a gear pump that wouldn&#39;t prime itself when submerged in oil, I would have struggled to believe it. Of course, all possible precautions should be taken when restarting any pump. Failure to do otherwise can result in a costly premature failure. 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>.</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/unusual-hydraulic-pump-problem#comments Hydraulics At Work Tue, 09 Feb 2016 00:47:00 +0000 36381 at http://hydraulicspneumatics.com Troubleshooting Challenge: Post-Hole Hammer Undergoes Pump Failures http://hydraulicspneumatics.com/hydraulic-pumps-motors/troubleshooting-challenge-post-hole-hammer-undergoes-pump-failures <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-post-hole-hammer-undergoes-pump-failures-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 fence contractor had a hydraulic attachment for his front-end loader that hammered fence posts into the ground. He would only get about two to three months of operation from the system before the hammer&rsquo;s pressure-compensated pump would fail. The pump manufacturer denied warranty claims, citing &ldquo;lack of lubrication&rdquo; as the cause of the failure.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/cylinders-actuators/troubleshooting-challenge-cylinder-speed-running-slow">Troubleshooting Challenge: Cylinder Speed Running Slow</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/troubleshooting-challenge-pump-noise-intermittent">Troubleshooting Challenge: Pump Noise is Intermittent</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/troubleshooting-challenge-hydrostatic-side-thruster-stops-working">Troubleshooting Challenge: Hydrostatic Side Thruster Stops Working</a></p> </div> <p>The contractor asked the pump manufacturer what evidence led them to conclude that the failure was due to lack of lubrication. He told them he was using the recommended oil, changed the return filters whenever the dirt indicator (∆P) gauge approached the yellow zone, and claimed the gauge never reached the red zone.&nbsp; The pump was driven off a gas engine that idled at 3600 rpm and about 2200 rpm under load.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/0116_Tshoot_Fig.jpg" style="width: 595px; height: 595px;" /></p> <p>They told him the piston barrel face was &ldquo;welded&rdquo; to the front plate it rotated against. The front cover of the pump, a Vickers PVB series, also acted as the pressure plate the barrel spins against.</p> <p>Any idea what was causing the premature pump failures?</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 January 5, 2016, 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 Shailendra Chaurasiya, who won December&rsquo;s Troubleshooting Challenge by having his answer drawn at random from those who correctly solved the problem. A $50 gift card was sent to him.</p> <p><strong>Solution to the Previous Troubleshooting Challenge: <a href="http://hydraulicspneumatics.com/cylinders-actuators/troubleshooting-challenge-cylinder-speed-running-slow" target="_blank">Cylinder Running Slow</a></strong></p> <p>A progressive die press was designed to form shell casings for use in military tanks. After the machine performed well during test runs, with the customer observing the results, it was disassembled before being shipped overseas for operation.</p> <p>After it was reassembled and running, it started to cycle slower than the designed cycle time. Adjusting the hydraulic system&rsquo;s counterbalance valve did not help.</p> <p>The operator noted that the tank line of the relief valve was not warm to the touch. A warm or hot tank line would indicate that the relief valve was leaking. The operator also installed a flow meter on the main pump&rsquo;s case drain, but flow was well within the normal range.</p> <p>The slow cycling press had a directional valve that required 65 to 75 psi of pressure to fully shift. The springs on both ends of the spool needed to be fully shifted to pass the rated flow. The 65-psi pilot pressure relief spring was discovered to be broken, so the system was only developing about half the pressure needed to fully shift the valve. The spool was partially shifting, acting like a flow control. Replacing the spring or the valve itself would solve the problem.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/troubleshooting-challenge-post-hole-hammer-undergoes-pump-failures#comments Construction Hydraulic Pumps & Motors Thu, 04 Feb 2016 17:02:00 +0000 36161 at http://hydraulicspneumatics.com Avoiding the Crowd http://hydraulicspneumatics.com/controls-instrumentation/avoiding-crowd <div class="node-body article-body"><p>A common characteristic in packaging machines is a large external control cabinet that houses not only electronic controls, but pneumatic valves and connections to electric drives and sensors through a multiplicity of cables and long lengths of tubing. A manufacturer of packaging equipment set out to overcome this limitation by completely redesigning one of its machines to ultimately reduce its floor space required.</p> <p>As a result, control cabinets containing the electrical and pneumatic components are now integrated into the machine&rsquo;s pedestal angles. The compact machine footprint helps to minimize cabling and makes it easier to place the modules and components used right where they are needed, also making them more accessible. The key element of this transition is <a href="http://www.festo.com" target="_blank">Festo&rsquo;s</a> CPX/MPA valve terminal.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Automate-sidebar.gif" style="width: 595px; height: 359px;" title="The CPX/MPA valve terminal cut installation time and required space by about a third in a redesigned packaging machine." /></p> <p>CPX terminal links the pneumatic and electrical control chains using quick, easy, and versatile connections to any automation concept and in accordance with any company specific standards. Machine safety is also addressed by using Festo&rsquo;s MS6-SV soft-start, quick exhaust valves. They provides reliable protection against unexpected start-up and feature an exhaust capacity 1&frac12; times its pressure rating.</p> <p>The machine itself contains a handling unit using Festo&rsquo;s DGSL miniature pneumatic slide and EGC electromechanical actuator for precise travel to intermediate positions. The deliberate use of both pneumatic and electric drive technology allows high precision to be obtained together with a high load capacity.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/controls-instrumentation/avoiding-crowd#comments Controls & Instrumentation Packaging Pneumatic Valves Thu, 04 Feb 2016 15:33:00 +0000 36101 at http://hydraulicspneumatics.com Air Valves Pull Three Shifts http://hydraulicspneumatics.com/pneumatic-valves/air-valves-pull-three-shifts <div class="field-deck"> The trend in automation toward smaller, multifunctional components marches on. One of the latest developments is pneumatic multifunctional flow-control valves in machines that produce infusion and blood bags. These valves shorten assembly time and cut installation space in half. </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/air-valves-pull-three-shifts-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>When manufacturing bags for medical fluids, extreme precision and high production speeds are of the utmost importance. The systems produced by <a href="http://www.kiefel.com/en/kiefel/" target="_blank">Kiefel GmbH</a>, Freilassing Germany, meet both requirements: The company specializes in developing and building systems for thermoforming and joining polymer films. Its machines for manufacturing infusion bags based on the contact welding method produce up to 6,500 bags per hour, while systems for making blood bags based on the high-frequency welding method produce up to 2,500 units.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/hydraulic-valves/10-essential-pneumatic-safety-products">10 Essential Pneumatic Safety Products</a></p> <p><a href="http:/hydraulicspneumatics.com/blog/pet-food-production-perks-pneumatic-valves">Pet-Food Production Perks Up with Pneumatic Valves </a></p> <p><a href="http:/hydraulicspneumatics.com/cylinders-actuators/great-match-packaging-and-pneumatics">A Great Match: Packaging and Pneumatics</a></p> </div> <p>Pneumatic components from <a href="http://www.festo.com" target="_blank">Festo</a> can be found in all Kiefel machines. The compact <a href="https://www.festo.com/cat/en-us_us/products_VFOF" target="_blank">VFOF-LE-BAH</a> valves offer one-way flow control, reducing assembly time and installation space requirements while making maintenance easier.</p> <p><strong>Pneumatics Right Down the Line</strong></p> <p>The new one-way flow control valves not only control the piston speed of cylinders, but also allow for an intermediate stop in a predefined position. Parts can be held and processed in this position, and lowering in the event of the compressed air being disconnected briefly can be prevented. To reduce potential risks as per the Machinery Directive 2006/42/EC, a manual exhaust function is used which switches the drive to the energy-free state if the compressed air supply has been disconnected.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/KBM102_label.gif" style="width: 595px; height: 351px;" title="This high-production machine relies heavily on pneumatics technology for fast and precise manufacturing of 6,500 infusion bags per hour." /></p> <p>Along with VFOF-LE-BAH, several other Festo components ensure efficient pneumatic processes in Kiefel systems. These include service units for compressed air preparation, valve terminals, and individual valves and cylinders. The latter are used, for example, to move the grippers for feeding the film and to operate punching, embossing, printing, and welding equipment.</p> <p><strong>From Film to Bag</strong></p> <p>Although the individual systems from Kiefel are all used to produce different products, the fundamental automation principle behind the medical technology machines is the same. The process is best illustrated by a new system for manufacturing infusion bags. In the first step, the film is unrolled. Dancer rollers perform a buffer function to cushion the synchronized motion sequences. They isolate the power from the machine, which is needed to set the parent roller in motion.</p> <p>This is followed by contactless electrostatic cleaning of the film and application of the product-specific information in the printing station. The system laterally feeds a film with the print medium. The inlet and outlet tubes for fluids such as blood or infusion solutions are then welded on. In the next processing step the entire bag is welded and the cooling systems then reduce the temperature of the welded sections. Finally, the bags are separated by punching or cutting, placed on a conveyor, and transported onwards.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Kiefel_007.gif" style="width: 595px; height: 416px;" title="Festo’s VFOF-LE-BAH offers three advantages over conventional one-way flow-control valves: small size, easy installation, and on-cylinder mounting." /></p> <p><strong>Three Functions, One Valve</strong></p> <p>Until a year ago, two pneumatic control elements&mdash;Festo&rsquo;s GRLA one-way flow control valve and HGL shut-off valve&mdash;were still required on many cylinders. The GRLA was used to adjust the flow rate, while the HGL blocked the flow in one direction. The blocked connection could be opened again by a control signal. Both valves are still installed in systems where called for by the design specifications.</p> <p>In other areas, however, the VFOF-LE-BAH valves offer the advantage of integrating three functions: variable piston speed, short intermediate stop, and individual manual exhaust. The efficient control element therefore saves time and money and reduces the installation space by more than 5%. <em>(For more on space-saving techniques, see &ldquo;<a href="http://hydraulicspneumatics.com/controls-instrumentation/avoiding-crowd" target="_blank">Avoiding the Crowd</a>.&rdquo;)</em> It is easy to operate and assemble and can be used everywhere. The pneumatic control elements offer versatile functionality, are energy-efficient and non-polluting, and reduce compressed air losses.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Kiefel_011.gif" style="width: 595px; height: 415px;" title="The VFOF-LE-BAH offers easy adjustment of cylinder speed, in large part because of its on-cylinder mounting." /></p> <p><strong>Two-thirds Less Assembly Time </strong></p> <p>For Peter Kronawitter, Pneumatics Design Engineer at Kiefel, specifying the VFOF-LE-BAH valves has paid off right down the line. &ldquo;Previously, our installation technicians had to install up to three different parts,&rdquo; he explains &ldquo;Now they install just one pneumatic component. Assembly now only takes a third of the time that it used to.&rdquo;</p> <p>Kronawitter also sees benefits for his company in the extensive portfolio of Festo pneumatic products, as well as in the fast, worldwide spare parts delivery service. &ldquo;This has permanently reduced our warehousing requirements,&rdquo; he says. With the one-way flow control valve VFOF-LE-BAH, Festo has opened up new possibilities in terms of time and space savings for Kiefel.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/pneumatic-valves/air-valves-pull-three-shifts#comments Packaging Pneumatic Valves Thu, 04 Feb 2016 14:53:00 +0000 36091 at http://hydraulicspneumatics.com High-Temp-Resistant Milling Machines Help Save the Environment http://hydraulicspneumatics.com/blog/high-temp-resistant-milling-machines-help-save-environment <div class="node-body blog-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Bettis-photo41-1000x265%20%281%29.jpg" style="width: 595px; height: 158px; margin: 3px;" /></p> <p>When it comes to repairing blacktop, <a href="http://www.bettisasphalt.com/" target="_blank">Bettis Asphalt &amp; Construction</a> is confident in the environmental finesse of its heating-and-milling machines. Unlike heavy trucks used in conventional overlays, the machines recycle 100% of the asphalt. But the company couldn&rsquo;t help but notice the impact of the high-temperature milling process on its hydraulic motors and gearboxes. In an effort to reduce downtime and meet customers&rsquo; time constraints, Bettis looked to IBT Industrial Solutions to help them redesign its hot-in-place mobile equipment.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/blog/intensive-procedure-helps-ensure-hydraulic-hose-cleanliness">Intensive Procedure Helps Ensure Hydraulic-Hose Cleanliness</a></p> <p><a href="http://hydraulicspneumatics.com/blog/pet-food-production-perks-pneumatic-valves ">Pet-Food Production Perks Up with Pneumatic Valves</a></p> <p><a href="http://hydraulicspneumatics.com/blog/videos-give-tips-clutch-and-brake-installation">Videos Give Tips on Clutch and Brake Installation</a></p> </div> <p>The company&rsquo;s eight machines, in a convoy that reaches up to 700 feet, apply direct heat from fire boxes to soften the asphalt for removal. The asphalt is then processed with a renewal emulsion and returned back to the ground. Even before the end of its busy season, the mobile hydraulic motors and gearboxes were ruined by the 1200&deg;F working conditions needed to mill the asphalt.</p> <p>&ldquo;Bettis is one of only two or three companies in the U.S. that do this type of work,&rdquo; says <a href="https://www.linkedin.com/pub/david-leffert/75/609/372" target="_blank">David Leffert</a>&nbsp;at&nbsp;<a href="http://www.ibtinc.com/" target="_blank">IBT Industrial Solutions</a>.&nbsp; &ldquo;We had to be very creative in how we approached the design of this system. Our goal was to find mobile hydraulic motors and gearboxes that could withstand one full season of extreme abuse.&rdquo;</p> <p>After considering the entire hydraulic system and ordering new hydraulic motors, gearboxes, and sprockets from <a href="http://www.youngpowertech.com/" target="_blank">Young Powertech</a>,&nbsp;<a href="http://www.martinsprocket.com/" target="_blank">Martin Sprocket</a>, and&nbsp;<a href="http://www.diamondchain.com/" target="_blank">Diamond Chain</a>, only one or two minor replacements were required to survive the next season.</p> <p>&ldquo;This year, we were able to complete all of our new projects on time,&rdquo; says James Campbell, Superintendent of the Hot-in-Place Recycle Division at Bettis Asphalt.&nbsp; &ldquo;Overall, we had about a 60% increase in speed of production over last year&rsquo;s season.&nbsp;Altogether, that&rsquo;s a significant improvement for us.&rdquo;</p> <p>Source: IBT Industrial Solutions&nbsp;<a href="http://www.ibtinc.com/asphalt-company-increases-output-60-with-new-mobile-hydraulics/" target="_blank">PrimeMover</a>&nbsp;Enewsletter.</p> </div> <div class="og_rss_groups"><ul class="links"><li class="og_links first last"><a href="/blog/fluid-power-talk">Fluid Power Talk</a></li> </ul></div> http://hydraulicspneumatics.com/blog/high-temp-resistant-milling-machines-help-save-environment#comments Construction Hydraulic Pumps & Motors News Fluid Power Talk Wed, 03 Feb 2016 21:25:00 +0000 36081 at http://hydraulicspneumatics.com How To Test A Hydraulic Cylinder http://hydraulicspneumatics.com/blog/how-test-hydraulic-cylinder <div class="node-body blog-body"><p>In a previous post, I described the danger associated with the intensification of pressure in a double-acting hydraulic cylinder. In this post, I will explain how to use the intensification effect to test the integrity of the piston seal in a double-acting hydraulic cylinder. But before attempting this test procedure, it is absolutely essential that the danger associated with pressure intensification in a hydraulic cylinder is fully understood. <a href="http://hydraulicspneumatics.com/blog/pressure-intensification-hydraulic-cylinders">Therefore, read this article FIRST</a>!<br /> <br /> The conventional way of testing the integrity of the piston seal in a double-acting cylinder is to pressurize the cylinder at the end of stroke and measure any leakage past the seal. This is commonly referred to as the &quot;end-of-stroke bypass test&quot;.<br /> <br /> The major limitation of the end-of-stroke bypass test, is that it generally doesn&#39;t reveal ballooning of the cylinder tube caused by hoop stress. The ideal way to test for ballooning of the cylinder tube is to conduct a piston-seal bypass test, mid-stroke. The major difficulty with doing this is that the force developed by the cylinder has to be mechanically resisted, which in the case of large diameter, high-pressure cylinders is impractical.<br /> <br /> However a mid-stroke bypass test can be conducted hydrostatically using the intensification effect. The necessary circuit is shown in Figure 1 below.<br /> <br /> <img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/cyl-test.jpg" style="width: 450px; height: 289px;" /><br /> &nbsp;&nbsp;&nbsp; Figure 1. Hydraulic cylinder test circuit.<br /> <br /> <strong>Test procedure</strong><br /> <br /> The procedure for conducting the test is as follows:</p> <ol> <li>&nbsp;Secure the cylinder with its service ports up.</li> <li>&nbsp;Fill both sides of the cylinder with clean hydraulic fluid through its service ports.</li> <li>Connect ball valves (1) and (2), gauges (3) and (4), relief valve (5) and directional control valve (6) as shown in Figure 1.</li> <li>With ball valves (1) and (2) open, stroke the cylinder using the directional control valve (6) multiple times to remove all remaining air from both sides of the cylinder - take care not to &#39;diesel&#39; the cylinder.</li> <li>Position the piston rod mid-stroke and close ball valve (2).</li> <li>With the adjustment on the relief valve (5) backed out, direct flow to the rod side of the cylinder.</li> <li>Increase the setting of relief valve (5) until the cylinder&#39;s rated pressure is seen on gauge (3).</li> <li>Close ball valve (1) and center directional control valve (6). Note: it is assumed that the hydraulic power unit used to conduct the test has its own over-pressure protection - not shown in Figure 1.</li> <li>Record the respective pressure readings on gauges (3) and (4) and monitor any change over time.</li> </ol> <p>If the ratio of effective area between the piston and rod side of the cylinder is 2:1, then if the rod side of the cylinder has been pressurized to 3,000 PSI, gauge (2) on the piston side should read 1,500 PSI. If the differential pressure across the piston is not maintained, this indicates a problem with the piston seal or tube.<br /> <br /> Under no circumstances should flow be directed to the piston side of the cylinder with ball valve (1) closed. Failure of the cylinder and/or personal injury could result. When conducting this or any other hydrostatic (pressure) test, always wear appropriate personal-protection equipment.<br /> <br /> REMEMBER: pressure intensification in a double-acting hydraulic cylinder is a potentially dangerous phenomenon. And failing to consider its implications can be a costly mistake. 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>.</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/how-test-hydraulic-cylinder#comments Hydraulics At Work Wed, 03 Feb 2016 00:34:00 +0000 36071 at http://hydraulicspneumatics.com More-Bendable Hose Simplifies Routing, Saves Space http://hydraulicspneumatics.com/hose-tubing/more-bendable-hose-simplifies-routing-saves-space <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Kurt-E-Z-Bend_web.jpg" style="width: 595px; height: 750px;" /></p> <p>Whether your company manufactures new equipment or repairs existing equipment, hose routing can sometimes pose a real challenge. With today&rsquo;s Tier-4 engines consuming more space within engine compartments, routing a hose from point A to point B can be tougher than ever. If you&rsquo;re lucky, you&rsquo;ll find a way to snake a hose around multiple obstacles. If luck isn&rsquo;t on your side, you&rsquo;ll have to remove and replace components to route a hose. Even outside the engine compartment, as equipment designs become more compact, placing components within a smaller envelope also presents greater challenges.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/blog/how-extend-hydraulic-hose-life">How To Extend Hydraulic Hose Life</a></p> <p><a href="http://hydraulicspneumatics.com/blog/look-hydraulic-hose-failures">A Look at Hydraulic Hose Failures</a></p> <p><a href="http://hydraulicspneumatics.com/blog/hydraulic-conductor-face-hose-vs-tube">Hydraulic Conductor Face Off: Hose vs Tube</a></p> </div> <p>Fortunately, these challenges became a little easier with the introduction of E-Z Bend hose developed by <a href="http://www.kurthydraulics.com" target="_blank">Kurt Hydraulics</a>, Minneapolis, Minn. E-Z Bend hose has half the bend radius of standard hose for easier routing. Providing greater flexibility and strength, E-Z Bend hose suits today&rsquo;s compact applications that require hydraulic hose with tight bend radius using minimal installation force.</p> <p>Targeted at high-pressure hydraulic oil lines in mobile and industrial hydraulic systems, E-Z Bend hose features four spiral layers of high-tensile-strength steel wire. Its inner tube is constructed of oil-resistant synthetic rubber. The hose&rsquo;s working temperature range is &ndash;40 to 212&deg;F, and it meets MSHA flame-resistance requirements.</p> <p>E-Z bend comes in four standard sizes: ⅝, &frac34;, 1 and 1&frac14; in. Working pressures range from 5,000 to 6,000 psi, and minimum burst pressures extend from 20,000 to 24,000 psi (both depend on hose size).</p> <p>The hose is intended to be used with Kurt&rsquo;s W-style end fittings, which come in 562 different types. Designed for use with SAE 100 R12 non-skive and all-wire-braided hose, the end fittings feature RoHS-compliant corrosion-resistant plating and are compatible with most model crimpers.</p> <p><em>For more information or a free catalog, call (866) 257-7995 or visit <a href="http://www.kurthydraulics.com/" target="_blank">www.kurthydraulics.com</a></em><em>, where the catalog can be downloaded.</em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hose-tubing/more-bendable-hose-simplifies-routing-saves-space#comments Hose & Tubing Tue, 02 Feb 2016 14:15:00 +0000 35991 at http://hydraulicspneumatics.com Machine Builder Unveils Green HPU http://hydraulicspneumatics.com/machine-tools/machine-builder-unveils-green-hpu <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/GreenPower-1_web.jpg" style="width: 595px; height: 447px;" title="The Green Hydraulic Power HPU uses either an asynchronous motor or synchronous servomotor driving an internal gear pump to control hydraulic pressure and flow. The HPU can transmit information on component performance and running efficiency to feed an Industry 4.0 scenario and predictive maintenance protocol. " /></p> <p><a href="http://www.mjcengineering.com" target="_blank">MJC Engineering</a>, Huntington Beach, Calif., a long-time builder of CNC metal-spinning, rotary-forge, and flow-forming machines, recently introduced a non-traditional member to its Spectra line of hydraulic power units (HPU). Dubbed Green Hydraulic Power, the new HPU provides higher machine yield, reduces noise generation by 20 dBA, and generates less heat than conventional power units. It also shortens cycle time on a variety of machine types and requires less oil in its reservoir. Perhaps best of all, the Green Hydraulic Power HPU can reduce electrical input energy by as much as 70%.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/pneumatic-valves/green-technology-improvements-solenoid-valves">Green Technology Improvements in Solenoid Valves</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/new-hpu-gives-wwii-sub-new-life">New HPU Gives WWII Sub New Life</a></p> <p><a href="http://hydraulicspneumatics.com/200/TechZone/ManifoldsHICs/Article/False/6405/TechZone-ManifoldsHICs">Engineering Essentials: Hydraulic Power Units</a></p> </div> <p>Green Hydraulic Power uses a <a href="http://www.siemens.com" target="_blank">Siemens</a> Sinamics variable-speed servopump drive that can offer complete payback in 12 to 24 months. MJC President Carl Lorentzen says, &ldquo;We saw that the servopump could control pressure and flow, as they precisely convert electric energy into hydraulic power. In some cases, the use of control valves is partially or completely eliminated, depending on the application.&rdquo;&nbsp;</p> <p>The system has the added benefit of control data output from an onboard diagnostic capability in the drive. It supplies information for a predictive maintenance protocol in an Industry 4.0 scenario.&nbsp; The basics of pressure, temperature, and acceleration data measurement are standard; additional data outputs on oil level, filter condition, running efficiency, and other parameters are available. The result can be up to a 70% reduction in onsite servicing requirements over conventional HPUs.&nbsp;</p> <p>The Spectra Line comes with standard reservoirs of 100, 200, or 300 gal, and a pressure rating to 4,000 psi. Two styles are available&mdash;a variable-frequency drive with asynchronous motor and internal gear pump, or a servoinverter consisting of a synchronous servomotor and internal gear pump.</p> <p><em>For more information, call Carl Lorentzen or Carla Cayton at MJC Engineering &amp; Technology Inc. at (714) 890-0618 or visit <a href="http://www.mjcengineering.com/" target="_blank">www.mjcengineering.com</a>. </em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/machine-tools/machine-builder-unveils-green-hpu#comments Machine Tools Hydraulic Pumps & Motors Mon, 01 Feb 2016 14:08:00 +0000 35971 at http://hydraulicspneumatics.com Des-Case Acquires OilMiser Product Line http://hydraulicspneumatics.com/news/des-case-acquires-oilmiser-product-line <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/DesCase_logo-web.png" style="width: 597px; height: 118px; margin: 3px;" /></p> <p>With its new acquisition of JLM Systems Limited, <a href="http://descase.com/">Des-Case Corp.</a> adds the OilMiser product line to its repertoire of specialty filtration products. <a href="http://www.oilmiser.com/">OilMiser</a> products include oil-mist adapters, oil-sampling products, reservoir aspirators, and equipment adapters to protect gearboxes and hydraulic reservoirs from harmful contamination. The newly acquired product line also includes Vapor Guard oil-mist adaptors that condense oil back into the reservoir for a safer work environment and complement Des-Case&rsquo;s desiccant breathers.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/controls-instrumentation/certified-power-acquires-cirus-controls-llc">Certified Power Acquires Cirus Controls, LLC</a></p> <p><a href="http://hydraulicspneumatics.com/news/te-connectivity-acquires-american-sensor-technologies-ast">TE Connectivity acquires American Sensor Technologies (AST)</a></p> <p><a href="http://hydraulicspneumatics.com/news/component-manufacturer-s-partnerships-expedite-service-and-repairs">Component Manufacturer&rsquo;s Partnerships Expedite Service and Repairs</a></p> </div> <p>&ldquo;OilMiser products have played a key role in helping increase equipment reliability, but in the hands of Des-Case, they will be able to support so many more global reliability engineers in their efforts to improve equipment uptime.&nbsp; I feel like I&rsquo;m leaving my innovations in the hands of a leading company that will take them far,&quot; says Dick Gangnon, president and founder of JLM Systems Limited. Gangnon will become a product technical consultant to Des-Case to help provide a seamless transition.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/des-case-acquires-oilmiser-product-line#comments Hydraulic Fluids News Thu, 28 Jan 2016 17:50:00 +0000 35781 at http://hydraulicspneumatics.com Tree Processor Comes Full Circle with Hydraulic Swivels http://hydraulicspneumatics.com/forestry-lumber/tree-processor-comes-full-circle-hydraulic-swivels <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/tree-processor-comes-full-circle-hydraulic-swivels-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><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Southstar-3_web.jpg" style="width: 595px; height: 446px;" title="Southstar Equipment’s forestry harvesting machinery needs to be rugged, reliable, and have generous freedom of motion. By incorporating a combination slip ring/hydraulic swivel, this grapple accomplishes those goals, and is easy to assemble." /></p> <p><a href="http://www.southstarequipment.com" target="_blank">Southstar Equipment</a>, a leading forestry attachment manufacturer based in Kamloops, B.C., Canada, designs and manufactures attachments that deliver efficient automated mechanized harvesting and processing for wood products. When Southstar engineers designed a full-rotation multi-tree processor, they needed to set the new logging attachment apart from others on the market. A 360&deg; rotating head and the ability to accurately process multiple trees at once helped Southstar do just that.</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/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/other-industries/wood-processor-cuts-energy-use-70">Wood Processor Cuts Energy Use up to 70%</a></p> </div> <p>Previous models of Southstar processors had a 340&deg; rotational limitation. To implement the crucial 360&deg; rotating head, Southstar partnered with <a href="http://www.uea-inc.com" target="_blank">United Equipment Accessories</a> (UEA) on an electrical slip ring/hydraulic swivel combination assembly.</p> <p><strong>Benefits of Two-in-One Design</strong></p> <p>&ldquo;Together, the combination assembly allows both electric and hydraulic power to flow without interruption throughout the full 360&deg; rotation,&rdquo; says Dean Flaig, Technical Sales Manager at UEA. The 20&deg; difference between 340&deg; and a continuous 360&deg; makes a big difference. Because UEA&rsquo;s combination assembly allows for full rotation, Southstar&rsquo;s customers see improved efficiencies, decreases in snags, and less maintenance.&nbsp;</p> <p>&ldquo;Having the new 360&deg; rotation standard in every machine is a huge selling point,&rdquo; says Brad Matthews, partner and controller at Southstar Equipment. &ldquo;Customers can do far more processing with the fully rotating head.&rdquo;</p> <p>Historically, Southstar had to purchase slip rings and hydraulic swivels separately&mdash;possibly from separate manufacturers. However, the combination assembly allows one part to integrate seamlessly to support electrohydraulic power flow.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/UEA-open_web.jpg" style="width: 595px; height: 549px;" title="With its access cover removed, this combination electrical slip ring/hydraulic swivel shows how the slip ring is located deep inside the component’s housing to protect it from harsh environmental conditions. The swivel allows for continuous 360° rotation to maximize design flexibility." /></p> <p>&ldquo;By designing these assemblies as a single component&mdash;with integral electrical slip-ring components encased inside of the steel housing of the hydraulic swivel&mdash;Southstar&rsquo;s attachments are much more resistant to outside elements like weather, dirt, and sawdust,&rdquo; says Flaig, who has more than 20 years of experience working with hydraulic swivels.</p> <p>Brady Haugo, UEA&rsquo;s design engineer on the Southstar assembly, adds, &ldquo;We also used more difficult manufacturing methods to ensure the product was robust. The main support flange could have been welded or bolted on, but for the sake of durability and robustness, we decided to machine it into the part even though doing so required a much bigger piece of stock material and more machining.&rdquo;</p> <p>Southstar&rsquo;s customers also don&rsquo;t have to stop production for tears in hydraulic hoses, which are virtually unheard of with UEA&rsquo;s combination assembly.</p> <p>&ldquo;From the very onset of our meeting with Southstar&rsquo;s engineering staff, we saw we were on a direct path toward solving a long-term drawback with their current design and the premature failure of the hydraulic hoses, says Flaig. &ldquo;Unknown to us at the time, we also helped have positive impact on the operation and production cycle times to the processor head.&rdquo;</p> <p>The combination assembly also decreases Southstar&rsquo;s assembly time with its 360&deg; attachments. Michael Klopp, Vice President at Southstar, says, &ldquo;Now that we have gone to the combination-style assembly, we receive our swivel slip-ring units pre-wired, which speeds up assembly time at the plant. We send these machines out and they work without any glitches right out of the gate.&rdquo;</p> <p><em>This information was submitted by Daniel Hanawalt, marketing coordinator at United Equipment Accessories (UEA), Waverly, Iowa. </em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/forestry-lumber/tree-processor-comes-full-circle-hydraulic-swivels#comments Forestry & Lumber Fittings & Couplings Thu, 28 Jan 2016 15:04:00 +0000 35751 at http://hydraulicspneumatics.com Construction Equipment Market Builds http://hydraulicspneumatics.com/construction/construction-equipment-market-builds <div class="node-body article-body"><p>Global sales of construction equipment are forecast to grow 3.9% in unit terms in 2016, to 760,508 machines, according to specialist economic forecasting and market research consultant, Off-Highway Research (<a href="http://www.offhighway.co.uk" title="www.offhighway.co.uk">www.offhighway.co.uk</a>). The expected improvement follows a weak performance in 2015, when global unit sales fell more than 10% from the total of nearly 818,000 machines sold in 2014. In 2016, growth is expected in the European, North American, and Indian equipment markets. Off-Highway Research also forecasts a greater stability in China, where sales of construction equipment have fallen from a peak of 435,070 units in 2011 to a projected 131,345 machines in 2015&mdash;a decline of 70% in four years.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/salarysurvey">2015 Engineering Salary Survey: Compensation Is Just the Beginning</a></p> <p><a href="http://hydraulicspneumatics.com/news/catalog-features-high-pressure-cylinders-components ">Catalog Features High-Pressure Cylinders, Components</a></p> <p><a href="certified-power-acquires-cirus-controls-llc">Certified Power Acquires Cirus Controls, LLC</a></p> </div> <p>&ldquo;There can be no doubt that 2015 was a tough year for the global equipment industry, due to slowing world economic growth and weak commodity prices,&rdquo; says Off-Highway Research managing director David Phillips. &ldquo;Unit sales fell to their lowest since the crisis years and the drop in the Chinese market was particularly brutal. However, there were improvements in several developed countries, which helped offset some of these losses.&rdquo;</p> <p>The gradual improvement in Europe, which began in 2014, is expected to continue this year, with unit sales increasing from a provisional 125,705 units in 2015 to 130,503 machines. Similarly, the North American market should rise a further 4% to 186,025 machines. Continued steady improvements are expected in the Indian construction equipment market, with unit sales expected to rise to 46,414 machines, compared to 38,554 in 2015. Meanwhile, in China, the market is expected to show an uptick of around 4%, with sales stabilizing at 137,820 units.<img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/News%20table.png" style="font-size: 12.8px; line-height: 20px; margin: 3px; width: 596px; height: 443px;" /></p> <p>In Japan, construction equipment sales are expected to fall from 79,998 units in 2015 to 73,825 machines in 2016. The key drivers of this are a tailing-off of reconstruction work following the 2011 earthquake and tsunami and the winding down of the government&rsquo;s economic stimulus programs.</p> <p>Phillips says, &ldquo;Off-Highway Research&rsquo;s forecast is for the start of a gradual return to health in the global construction equipment market in 2016. However, as has been the case since the crisis years of 2008 and 2009, business confidence remains fragile, and the uncertain geopolitical outlook around the world could have a negative impact on the sector.&rdquo;</p> <p>Off-Highway Research will be exhibiting at&nbsp;Bauma&nbsp;2016, in Munich from April 11 to 17, Hall B5, Stand 227/B. The firm will present updated forecasts for the global industry across its Chinese, European, and Indian subscription services, its Chinese, Indian, and International databases, and the global Volume &amp; Value service.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/construction/construction-equipment-market-builds#comments Construction News Wed, 27 Jan 2016 16:03:00 +0000 35701 at http://hydraulicspneumatics.com Certified Power Acquires Cirus Controls, LLC http://hydraulicspneumatics.com/controls-instrumentation/certified-power-acquires-cirus-controls-llc <div class="node-body article-body"><p><a href="http://www.certifiedpower.com/cps/">Certified Power Inc.</a> announces the acquisition of <a href="http://www.ciruscontrols.com/">Cirus Controls LLC</a>, expanding its reach in electronic spreader controls, central hydraulic systems, advanced plow controls, and telematics-based performance management systems for the winter-road and maintenance industry.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/controls-instrumentation/hydraulics-powers-road-hvac-system">Hydraulics Powers Off-Road HVAC System</a></p> <p><a href="http://hydraulicspneumatics.com/news/component-manufacturer-s-partnerships-expedite-service-and-repairs">Component Manufacturer&rsquo;s Partnerships Expedite Service and Repairs</a></p> <p><a href="http://hydraulicspneumatics.com/news/te-connectivity-acquires-american-sensor-technologies-ast">TE Connectivity acquires American Sensor Technologies</a></p> </div> <p>&ldquo;Cirus Controls&rsquo; market solutions are highly strategic and complementary to our winter road maintenance products business,&rdquo; says Scott Rosenzweig, the President of Certified Power. &ldquo;We believe that the entire team from Cirus Controls, with their engineering expertise, commitment to customer service, and focus on company culture, is a perfect fit within the Certified Power family.&rdquo;</p> <p>Paul Mortell, founder and President of Cirus Controls, will continue to lead the business.&nbsp;Certified Power continues to look for add-on acquisitions that enhance opportunities for both companies&rsquo; customers, vendors and employees. &nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/controls-instrumentation/certified-power-acquires-cirus-controls-llc#comments Controls & Instrumentation News Tue, 26 Jan 2016 20:20:00 +0000 35691 at http://hydraulicspneumatics.com Tough-Built Hydraulics Tackle Rough Terrain http://hydraulicspneumatics.com/hydraulic-pumps-motors/tough-built-hydraulics-tackle-rough-terrain <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/tough-built-hydraulics-tackle-rough-terrain-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>Rough-terrain forklifts have to deal with more than just rough terrain. Such terrain almost always means constant outdoor use, so they must perform equally well in hot, arid climates; frigid temperatures and other Arctic-like conditions; and everything in between. But these conditions do not minimize those of rough terrain, where steep grades produce wide swings in loads and uneven ground can transmit shock throughout a machine&rsquo;s hydraulic system.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/material-handling/hydraulics-essential-mobile-forklift">Hydraulics Essential to Mobile Forklift</a></p> <p><a href="http://hydraulicspneumatics.com/news/forklift-trucks-reap-benefits-hybrid-hydraulics">Forklift Trucks Reap Benefits of Hybrid Hydraulics</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-drives-move">Hydraulic Drives on the Move</a></p> </div> <p><a href="http://www.kalmarrt.com" target="_blank">Kalmar Global</a> manufactures a wide variety of off-highway equipment, including the RT022 rough-terrain telescopic forklift. Compact enough to drive right inside a container, it features two-wheel, four-wheel, and crab steering modes for excellent maneuverability on the most challenging surfaces. With side-shifting forks for container loading and unloading, and a tight turning radius of just 30 ft., the RT022 is well-suited for lifting operations in tight spaces.</p> <p>With a lifting capacity of 5,000 lb., the RT022 is used to handle ISO containers, which primarily contain supplies and ammunition for expeditionary operations. The machines are small enough to drive directly into a container and can ford water up to 0.9 m (3 ft.) deep.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Kalmar-desert_web.jpg" style="width: 595px; height: 507px;" title="Kalmar’s RT022 rough-terrain telescopic forklift relies on Eaton’s DuraForce pumps and motors for hydrostatic ground drive that transmits power to axles for two- or four-wheel drive." /></p> <p>The RT022 is powered by a 68-kW (91 hp) Perkins diesel engine, which drives <a href="http://www.eaton.com/DuraForce" target="_blank">DuraForce</a> HPV pumps and HMV motors from <a href="http://www.eaton.com/Eaton/index.htm" target="_blank">Eaton Hydraulics</a>, Eden Prairie, Minn.</p> <p>Randy Wingenroth, Vice President of Product Development at Kalmar, says that Eaton&rsquo;s DuraForce hydrostatic drive train provides the best cost/performance ratio: &ldquo;The performance of the RT022 has met the demanding needs of the application, and this success has been due, in part, to the DuraForce product and the support we&rsquo;ve received from Eaton.&rdquo;&nbsp;</p> <p>DuraForce pumps and motors use an unconventional rotating kit that replaces the traditional bronze piston slipper with a steel version. In so doing, the DuraForce product strengthens a traditional weak link of piston product design. Other design features, such as the rigid housing and hydrostatic bearing, ensure high reliability under high duty cycles at peak operating pressures to 500 bar (7,250 psi).</p> <p>Says Vince Duray, Product Manager at Eaton Hydraulics, &ldquo;Eaton&rsquo;s DuraForce products have been installed on more than 1,000 machines so far, with no issues in the field.&rdquo;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/tough-built-hydraulics-tackle-rough-terrain#comments Other Industries Hydraulic Pumps & Motors Tue, 26 Jan 2016 15:03:00 +0000 35671 at http://hydraulicspneumatics.com Pressure Intensification In Hydraulic Cylinders http://hydraulicspneumatics.com/blog/pressure-intensification-hydraulic-cylinders <div class="node-body blog-body"><p>A question I&#39;m asked regularly is: <em>&quot;What is the best way to test the integrity of the piston seal in a double-acting hydraulic cylinder?&quot;</em><br /> <br /> There is a simple bench-test for doing this but it involves the intensification of pressure in the cylinder. While the test procedure is safe if you understand the concept of intensification in a hydraulic cylinder - it is inherently dangerous if you don&#39;t. In this post I will explain the dangers of intensification in a double-acting cylinder and in my next post I will explain the test procedure.<br /> <br /> Force produced by a hydraulic cylinder is a product of pressure and area (F = p x A). In a conventional double-acting cylinder the effective area and therefore force produced by the piston and rod sides of the cylinder are unequal. It follows that if the rod side of the cylinder has half the effective area of the piston side, it will produce half the force of the piston side for the same amount of pressure.<br /> <br /> The equation F = p x A can be transposed as p = F/A that is, pressure equals force divided by area. If the rod side of the cylinder has to resist the force developed by the piston side, with only half the area, then it needs double the pressure. This means that if the piston side is pressurized to 3,000 PSI a pressure of 6,000 PSI will be required on the rod side to produce an equal force. This is why pressure intensification can occur in a double-acting cylinder. Note that pressurizing a cylinder rated at 3,000 PSI, to 6,000 PSI, can have devastating consequences. <a href="http://www.hydraulicsupermarket.com/flash/intensification_meter-out_video.html"><strong>Watch this 6-minute video</strong></a> for a better understanding of pressure intensification in a hydraulic cylinder.<br /> <br /> If, for any reason, the piston side of a double-acting cylinder is pressurized and at the same time fluid is prevented from escaping from the rod side, pressure will increase (intensify) in the rod side of the cylinder until the forces become balanced or the cylinder fails catastrophically. Consider the following scenario one of our members described to me recently:<br /> <br /> <em>&quot;It was minus 36 degrees here the other day and we had a hydraulic cylinder at about minus 10 degrees. The boss was attempting to press out a pin. He turned on the pump and moved the lever. Next thing, the gland of the cylinder blew out. It was a 7.5&quot; cylinder with a 2,500 PSI operating pressure.&quot;</em><br /> <br /> The gland on this hydraulic cylinder blew out as a result of pressure intensification. This was due to a blockage between the rod side of the cylinder and tank, as a result of the cold conditions. The ambient temperature had fallen below the pour point of the hydraulic oil, so the oil couldn&#39;t flow.<br /> <br /> As you can see, pressure intensification in a double-acting hydraulic cylinder is a potentially dangerous phenomenon. And failing to consider its implications can be a costly mistake. 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>.</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/pressure-intensification-hydraulic-cylinders#comments Hydraulics At Work Tue, 26 Jan 2016 00:46:00 +0000 35661 at http://hydraulicspneumatics.com Hydraulics & Pneumatics Products of the Week (1/25-2/1) http://hydraulicspneumatics.com/fittings-couplings/hydraulics-pneumatics-products-week-125-21 <div class="node-body gallery-body"><p>The new product roundup includes push-to-connect fittings and flow-control valves, along with radial-piston hydraulic motors, and new standard cartridge valves.&nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/fittings-couplings/hydraulics-pneumatics-products-week-125-21#comments Products Food & Beverage Controls & Instrumentation Fittings & Couplings Hydraulic Pumps & Motors Rail, Truck & Bus Pneumatic Valves Mon, 25 Jan 2016 22:33:00 +0000 35651 at http://hydraulicspneumatics.com Contributed Article Guidelines http://hydraulicspneumatics.com/contributed-article-guidelines <fieldset class="fieldgroup group-images"> </fieldset> <div class="node-body curated_topic-body"><p>&nbsp;</p> <div align="center"><img alt="" src="/site-files/electronicdesign.com/files/uploads/2015/02/ContributedGuidlelines.gif" style="width: 595px; height: auto;" /></div> <p>&nbsp;</p> <p>The Penton Design, Engineering and Sourcing (DES) Group includes&nbsp;<em>Hydraulics &amp;&nbsp;Pneumatics</em>, <em>Machine Design</em>, <em>Electronic Design</em>, and <em>Microwaves &amp; RF</em>. In general, each publication handles its own contributed content. Check the <a href="http://hydraulicspneumatics.com/contact-us" target="_blank"><strong>Contact Us</strong></a> page on this website for a list of editors and their contact information.&nbsp;</p> <p>Looking for information on how to submit contributed articles? Check out the downloads below for everything you need to know:</p> <h3 class="rtecenter">Article Submission Guidelines</h3> <p class="rtecenter"><a class="btn btn-branded btn-wide" helvetica="" href="http://electronicdesign.com/site-files/electronicdesign.com/files/uploads/2015/11/PentonDESGroupArticleSubmissionGuidelines.pdf" style="font-family: Arial," target="_blank">Download PDF</a></p> <h3 class="rtecenter">Style Sheet</h3> <p class="rtecenter"><a class="btn btn-branded btn-wide" helvetica="" href="http://electronicdesign.com/site-files/electronicdesign.com/files/uploads/2015/11/PentonDESStyleSheet.pdf" style="font-family: Arial," target="_blank">Download PDF</a></p> <h3 class="rtecenter">Contributed Article Template</h3> <p class="rtecenter"><a class="btn btn-branded btn-wide" href="http://electronicdesign.com/site-files/electronicdesign.com/files/datasheets/gated/PentonDESGroupTemplate.doc" style="font-family: Arial," target="_blank">Download Document</a></p> </div> <div class="og_rss_groups"></div> Community Mon, 25 Jan 2016 21:58:00 +0000 35641 at http://hydraulicspneumatics.com Hydraulic-Electric Analogies: Hydraulic Power Conversion, Part 3 http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-hydraulic-power-conversion-part-3 <div class="field-deck"> Power generated by hydraulic systems exhibits current flow traits similar to those of its electrical counterparts. </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-hydraulic-power-conversion-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><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Motion-Control-6.png" style="width: 595px; height: 333px;" title="6. A side view of an axial piston pump shows the essential parts of the pumping elements. Housing and bearing and shaft seals, etc., are not shown. " /></p> <p>This month advances the discussion of a pump into the realm of other commercially viable configurations used in both mobile and industrial applications. In addition, it presents a pump that will also work as a motor. Figures 6 and 7 show the essential internal parts that perform the actual pumping function in the pump. Figure 7 is merely a view of the internal parts as viewed from the shaft end of the pump.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Motion-Control-7.png" style="width: 350px; height: 257px; float: left;" title="7. This view of the axial piston pump comes from the shaft end of the elements shown in Figure 6." /></p> <p>To understand the logic of the pump function, it&rsquo;s important to know which elements are stationary and which are moving. If they&rsquo;re moving, it&rsquo;s essential to understand the nature of their motion, too. Only the port plate is stationary for the pump elements shown. It neither spins, tilts, nor reciprocates because it is locked to the pump housing by means that are not shown. The plate stands perfectly still as the rotating barrel slides past on a thin, oily, lubricating film.</p> <p><strong>Role of the Port Plate</strong></p> <p>The port plate&rsquo;s function is to serve as the ac-dc converter that allows the alternating flow and pressure inside the pumping cavities to smoothly communicate with the unidirectional flow and pressure in the outside world. It eliminates the need for the check valves shown in &nbsp;Figures 2 and 4 in Part 1<em> (see &ldquo;<a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-hydraulic-power-conversion-part-1" target="_blank">Hydraulic-Electric Analogies: Hydraulic Power Conversion, Part 1</a>&rdquo;) </em>and Figure 5 in Part 2 <em>(see &ldquo;<a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-hydraulic-power-conversion-part-2" target="_blank">Hydraulic-Electric Analogies: Hydraulic Power Conversion, Part 2</a>&rdquo;)</em>. It is to the pump what the commutator elements are to the electrical dc motor. Later on, more will be said about the port plate.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-hydraulic-power-conversion-part-2">Hydraulic-Electric Analogies: Hydraulic Power Conversion, Part 2</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-hydraulic-power-conversion-part-1">Hydraulic-Electric Analogies: Hydraulic Power Conversion, Part 1</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-motors-and-generators-part-6">Hydraulic-Electric Analogies: Motors and Generators, Part 6</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-dc-motors-part-5">Hydraulic-Electric Analogies: DC Motors, Part 5</a></p> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-torque-speed-behavior-part-4">Hydraulic-Electric Analogies: Torque-Speed Behavior, Part 4 </a></p> </div> <p>Of course, the shaft spins about its central axis and is keyed to its prime mover as well as to the barrel. Therefore, as the shaft spins, so does the barrel. The barrel houses the pistons, which are closely fitted to prevent bypass leakage and axial reciprocation within their respective bores. That&rsquo;s because they are in sliding contact with the smooth and lubricated surface of the swashplate through their swiveling slippers <em>(Fig. 8)</em>.</p> <p>The swashplate can pivot because of the tilt-axis bearing, but it&rsquo;s important to realize that the swashplate does not spin with the shaft. It can only tilt around its own axis and swashplate tilt bearings. Tilting on an axis is transverse to the shaft centerline, creating an inclined plane for the pistons.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Motion-Control-8_web.jpg" style="width: 595px; height: 425px;" title="8. An exploded view of the rotating barrel and stationary port plate, along with piston and slipper details, help to visualize the operation of the axial piston pump. " /></p> <p>As the shaft spins, also spinning the barrel filled with the reciprocating pistons, the pistons and their attached slippers are forced to &ldquo;climb the inclined plane&rdquo;, so to speak. Thus, they are forced into the barrel bores on the side that faces the viewer. The pistons on the viewer&rsquo;s side of the barrel <em>(Fig. 6, again)</em> are rising as well as moving to the right, expelling fluid during this process.</p> <p><strong>Piston Action </strong></p> <p>On the other side of the barrel, however, the pistons are moving &ldquo;down&rdquo; the inclined swashplate surface due to barrel rotation. The inclined plane of the swashplate forces those pistons to withdraw from their respective bores, and in doing so, they ingest fluid, creating the inlet side of the machine.</p> <p>Figure 9 shows a 3D view of the barrel, with all nine pistons at various amounts of stroke, which depends on the amount of shaft rotation. That is, as the shaft rotates about the central shaft axis, it is keyed to the barrel, forcing the barrel to also rotate.</p> <p>Although they are not shown in Figure 9, several slippers are in sliding contact with the tilted swashplate, forcing the pistons to plunge deeper into their respective bores. Those at the bottom of the barrel have the least penetration into the bores, while those at the top position have the greatest penetration. This means that all of the pistons in the bores on the right side of the barrel are moving into their bores, while those on the left side are being pulled out of their bores.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Motion-Control-9.png" style="width: 595px; height: 431px;" title="9. This barrel and port plate view shows the nine pistons in the barrel and various degrees of axial stroke. " /></p> <p>Furthermore, the pistons on the right side are expelling fluid, while those on the left side are pulling in fluid (actually, atmospheric pressure acting on the reservoir surface is pushing fluid into the evacuating piston bores). Now, the port plate with its two &ldquo;kidney ports&rdquo; is not spinning, but is in sliding and lubricated contact with the flat barrel face.</p> <p>On top of that, the right hand kidney port is the outlet side and the left-hand kidney port <em>(Figs. 8 and 9, again)</em> is the inlet. This is true whether the machine is functioning as a pump or as a motor.</p> <p><strong>Pumping vs. Motoring Pressure</strong></p> <p>When the machine is in a pumping mode, the outlet side is at high pressure while the inlet side is at a much lower pressure. The opposite is true when motoring. The pressure difference between the two sides and their respective external ports (not shown in the figures) could be as much as 350 bar (approximately 5,000 psi), resulting in a huge pressure gradient across the two very narrow crossover spans shown in Figure 10. Because of the viewpoint (i.e., from the port-plate end), the barrel is rotating in the clockwise direction. The pistons on the left side are moving toward the viewer, making it the outlet side as well as the high-pressure side, when operating as a pump.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Motion-Control-10.png" style="width: 594px; height: 414px;" title="10. The pistons on the outlet side are moving toward the viewer, expelling fluid; the pistons on the inlet side are moving away from the viewer and taking fluid in. The crossover spans are drawn narrow on purpose to illustrate their sealing functions. " /></p> <p>The barrel is spinning along with the spinning shaft, but the port plate is stationary. The narrow crossover spans form a sliding seal between the high and low pressures, requiring very low manufacturing tolerances while allowing for good lubrication. A seal is also formed between the rotating piston chambers and the circumferential zones surrounding the barrel. The seal restricts leakage that travels radially outward. Seal points within the machine are dynamic and must provide the sealing, but not create friction.</p> <p>Any internal leakage, much of it necessary for lubricating moving parts, results in reduced volumetric efficiency. Mechanical friction, on the other hand, results in reduced mechanical efficiency. Both instances contribute to the overall inefficiency of the machine, whether it be a pump or a motor. Design of the pump or motor requires a balance between internal lubricating leakage past sliding surfaces and internal friction from insufficient clearances.</p> <p><strong>Crossover Spans</strong></p> <p>The crossover spans in Figure 10 were deliberately drawn to be too narrow so that the piston at top dead center can still be seen. At the moment the pistons are in the positions shown in the drawing, a dead &ldquo;hydraulic short circuit&rdquo; exists between the high- and low-pressure sides. That&rsquo;s because high-pressure fluid will make its way into the piston chamber (bore), past the crossover span, and out the other side.</p> <p>It should be apparent that the correct crossover-span width is approximately the diameter of one piston. Actually, it&rsquo;s just slightly larger to create a better seal. If it&rsquo;s too wide, though, fluid entrapment will contribute to pulsations (noise) and inefficiency.</p> <p>Any internal leakage will reduce the machine&rsquo;s efficiency and is thus deemed undesirable. However, as already stated, some leakage is essential for effective lubrication. To that end, there are other internal leakage paths.</p> <p>Looking at Figure 8, note the lubricating passage drilled down the center of each piston. This passage provides lubrication to the ball-slipper joint and the slipper-swashplate contact. In addition, necessary clearance exists between the pistons and their bores, each comprising another internal leakage path.</p> <p>In spite of the mixture of leakage paths, the volumetric efficiency of a modern high-pressure piston pump can reach to 97% at pressures as high as 350 bar. Design of the machine is a delicate balance among effective sealing, effective lubrication, and low friction. Mechanical efficiencies can reach into the mid 90% ranges, leading to power efficiencies in the low 90% range. To reiterate, though, the reciprocating pistons cause ac hydraulics inside the piston bores, but dc flow in the external circuit.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-electric-analogies-hydraulic-power-conversion-part-3#comments Controls & Instrumentation Hydraulic Pumps & Motors Mon, 25 Jan 2016 14:04:00 +0000 35621 at http://hydraulicspneumatics.com Smart Fluid Power on the Internet http://hydraulicspneumatics.com/other-technologies/smart-fluid-power-internet <div class="field-deck"> Have you jumped on the Internet of Things bandwagon yet? It’s the wave of the future, so you’d better get hopping before it blows right past you. </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/smart-fluid-power-internet-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>Over the past year or so, Industry 4.0 and the Industrial Internet of Things (IIoT) have been creeping into the vocabulary of fluid-power practitioners. IIoT and Industry 4.0 appear to be the same concept, with Industry 4.0 prevailing in Europe. The main difference seems to be the organizations promoting them.</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/hydraulic-fluids/check-fluid-temperature-your-smartphone">Check Fluid Temperature&hellip;From Your Smartphone</a></p> <p><a href="http://hydraulicspneumatics.com/technologies/hydraulics-fit-industry-40">Hydraulics Fit for Industry 4.0</a></p> </div> <p>The terms are still unfamiliar to many outside the technological community, and the same holds true for those within the specialized field of fluid power. Buzz terms like <em>big data</em> and <em>cloud computing</em> seem to have even less relevance except to those who work with control networks.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Sun-application.gif" style="width: 595px; height: 898px;" title="The Bluetooth Embedded Amplifier from Sun Hydraulics (below) features a factory-integrated coil and connector combination for use with the company’s proportional solenoid valves. Users can configure the embedded amplifier wirelessly via Bluetooth using iOS and Android mobile devices for quick, easy, and reliable wireless calibration (above).." /><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Sun-inset.gif" style="width: 350px; height: 1022px;" /></p> <p>So, just what is the Internet of Things? The answer depends on who you ask, but the most understandable explanation I&rsquo;ve read is from the <a href="http://internetofthingsagenda.techtarget.com" target="_blank">IoT Agenda</a> website. Here&rsquo;s what it says:</p> <p>&ldquo;The Internet of Things is an environment in which objects, animals, or people are provided with unique identifiers (IP addresses) and the ability to transfer data over a network without requiring human-to-human or human-to-computer interaction. IoT has evolved from the convergence of wireless technologies, microelectromechanical systems (MEMS) and the Internet.</p> <p>&ldquo;A thing, in the Internet of Things, can be a person with a heart monitor implant, a farm animal with a biochip transponder, an automobile that has built-in sensors to alert the driver when tire pressure is low&mdash;or any other natural or man-made object that can be assigned an IP address and provided with the ability to transfer data over a network.&nbsp;</p> <p>&ldquo;So far, the IoT has been most closely associated with machine-to-machine (M2M) communication in manufacturing and power, oil, and gas utilities. Products built with M2M communication capabilities are often referred to as being smart.&rdquo;</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/Webtec-DHM1.gif" style="width: 595px; height: 594px;" title="Webtec’s DHM 404 and DHM 804 digital hydraulic multimeters use Bluetooth Smart (v4.0) to communicate with mobile phones and tablets running iOS and Android operating systems. The portable instrument records and saves up to 12 sets of data points to its internal memory, and produces electronic reports that can be emailed to recipients or uploaded to factory software for machine monitoring and trend analysis. " /></p> <p>Based on this explanation, the IoT doesn&rsquo;t seem much different from what&rsquo;s been going on for years with industrial and mobile machines connected to any of several serial-bus communication networks. One obvious difference is communication through wireless networks and the ability to share information. That may not appear like a big jump&mdash;similar to when cordless phones were the rage in the home.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/TransducersDir_0.jpg" style="width: 301px; height: 750px; float: left;" title="This Bluetooth-certified wireless pressure transducer developed by Transducers Direct is intended for a wide variety of pressure-monitoring applications, including hydraulic systems rated to 10,000 psi. It connects to smartphones, tablets, and PCs with BLE (Bluetooth low energy) and provides long battery life via proprietary technology. Standard full-scale accuracy is ±1%, with ±0.25% optional." /></p> <p>Kevin Ashton, cofounder and executive director of the Auto-ID Center at MIT, probably explains the potential of the Internet of Things best: &ldquo;Today computers&mdash;and, therefore, the Internet&mdash;are almost wholly dependent on human beings for information. Nearly all the data available on the Internet were first captured and created by human beings who were typing, pressing a record button, taking a digital picture, or scanning a bar code.&nbsp;</p> <p>&ldquo;The problem is, people have limited time, attention, and accuracy&mdash;all of which means they are not very good at capturing data about things in the real world. If we had computers that knew everything there was to know about things&mdash;using data they gathered without any help from us&mdash;we would be able to track and count everything and greatly reduce waste, loss, and cost. We would know when things needed replacing, repairing, or recalling, and whether they were fresh or past their best.&rdquo;</p> <p><strong>Where Does that Leave Us?</strong></p> <p>Whether you work with pneumatics, industrial hydraulics, mobile hydraulics, or all three, products have already entered the marketplace that communicate through wireless networks for data acquisition, machine monitoring and control, and diagnostics. However, IoT applications don&rsquo;t necessarily require that every device in a fluid-power system be able to communicate over wireless networks.</p> <p>Machines on the factory floor have already been in place that provide two-way communication and control through fieldbus networks. For mobile equipment, this could take the form of coordinated control between multiple machines on a construction site, with individual machine control provided through GPS guidance.</p> <p>In either case, each machine&rsquo;s decentralized controls provide monitoring and control of individual components, and the fieldbus coordinates control and operation with other machines and production schemes to optimize operation and efficiency. Therefore, machines with these decentralized controls can be retrofitted as needed.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/other-technologies/smart-fluid-power-internet#comments Other Technologies Hydraulic Pumps & Motors Fri, 22 Jan 2016 20:19:00 +0000 35601 at http://hydraulicspneumatics.com Stainless Steel isn't Just Stainless Steel http://hydraulicspneumatics.com/blog/stainless-steel-isnt-just-stainless-steel <div class="node-body blog-body"><p>Stainless steels are available in varieties with a wide range of properties. Some are more resistant to certain types of corrosion than others. Some are stronger than others, while others are used for their machinablity, weldability, or for cleanliness when contacting food products.</p> <p>Lengthy textbooks have been written on stainless steels, but if you&#39;re looking for a quick reference that&#39;s an easy read and packed with information, I recommend an article that was published in our sister publication, <a href="http://machinedesign.com" target="_blank"><em>Machine Design</em></a>, a few years ago. It was written by Norm Ellis, an expert in the field of stainless steels.</p> <p>Read this informative article by <strong><a href="http://machinedesign.com/materials/comparing-stainless-steel-and-other-metals?code=UM_Classics011a&amp;utm_rid=CPG05000003742421&amp;utm_campaign=4653&amp;utm_medium=email&amp;elq2=f1c47cc50b0e4f0a859b98525556277f" target="_blank">clicking here</a></strong>.</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/stainless-steel-isnt-just-stainless-steel#comments Other Components The Hitch Post Fri, 22 Jan 2016 19:50:00 +0000 35591 at http://hydraulicspneumatics.com How To Master Hydraulic Troubleshooting http://hydraulicspneumatics.com/blog/how-master-hydraulic-troubleshooting <div class="node-body blog-body"><p>Troubleshooting is an inferential process. So to become an effective troubleshooter, you must employ a solid PROCESS. But you also need relevant KNOWLEDGE. Consider the old Indian Monkey Trap, for example:<br /> <br /> The trap consists of a hollowed-out coconut chained to a stake. The coconut contains rice which can be accessed through a hole in the coconut&#39;s shell. The hole is just big enough to allow the monkey to get its hand in, but too small for the monkey&#39;s clenched fist, full of rice, to come out.<br /> <br /> The monkey reaches in, grabs a handful of rice and finds himself trapped. The villagers are coming to get him... They&#39;re getting closer every minute... The monkey panics and starts yanking on his arm. But it&#39;s no use.<br /> <br /> The monkey&#39;s freedom is now totally dependent on his troubleshooting ability. And his troubleshooting ability depends on the process he uses - because the monkey doesn&#39;t understand how the trap works. He lacks essential knowledge. And without a reliable process he&#39;s got little chance of discovering this knowledge. So he may as well keep yanking on his arm.<br /> <br /> Key words: KNOWLEDGE and PROCESS.<br /> <br /> You need them both to become a reliable and effective troubleshooter. And both have to be learnt. Which is why the man who can cast his eye over a hydraulic machine and quickly zero-in on the fault is &#39;Top-Gun&#39; in the hydraulics world.<br /> <br /> He&#39;s admired by most. Envied by many.<br /> <br /> The good news is, it&#39;s never been easier to join the ranks of this elite and highly-paid group. Because just as hydraulic systems are becoming more sophisticated, so too are the tools available to analyze and troubleshoot them. These days in fact, with the right tools and tuition, you can slash the time is used to take to become a troubleshooting wizard. <a href="http://www.hydraulicsupermarket.com/troubleshooting.html">I demonstrate this point here with an instructive video</a>.<br /> <br /> With limited knowledge AND no reliable process, the monkey&#39;s situation is hopeless. If only he knew how simple it was to secure his freedom. (Hint: all he has to do is employ the troubleshooting technique known as backing-out).<br /> <br /> Unfortunately, failing to follow proven principles when troubleshooting usually results in costly mistakes. 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>.</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/how-master-hydraulic-troubleshooting#comments Hydraulics At Work Tue, 19 Jan 2016 00:18:00 +0000 35581 at http://hydraulicspneumatics.com Why You SHOULD Fix Those Annoying Oil And Air Leaks http://hydraulicspneumatics.com/blog/why-you-should-fix-those-annoying-oil-and-air-leaks <div class="node-body blog-body"><p>In a previous blog post I discussed the true cost of hydraulic oil leaks. In the case of oil leaks, the cost areas that need to be considered include:<br /> <br /> --Make-up fluid;<br /> --Clean-up;<br /> --Disposal;<br /> --Contaminant ingress; and<br /> --Safety.<br /> <br /> But what about hydraulics&#39; fluid power cousin: pneumatics? One of the advantages that pneumatics has over hydraulics is its clean-ness. Air leaks are much easier to ignore than oil leaks because they don&#39;t draw attention to themselves in the same way. You don&#39;t need to worry yourself with clean-up and disposal costs. Contaminant ingression is possible, but is generally not a major concern. And unless the leak is significant, safety is not usually a big issue either. So that leaves make-up fluid (air).<br /> <br /> <strong>Make-up air</strong><br /> <br /> While air is free - clean, dry compressed air is not. In considering the cost of make-up air for a pneumatics system the following need to be considered:<br /> <br /> --Depreciation (wear and tear) of the compressor;<br /> --Conditioning costs - filtration, drying and lubrication; and<br /> --Energy cost of compression.<br /> <br /> The ideal leakage rate is of course zero, but when calculating the free air delivery (FAD) required by a pneumatic system a rule of thumb is to allow for leakage of 10% of total flow rate. Consider a 10 cubic meter/minute system leaking one cubic meter/minute. The power required to compress one cubic meter (35.3 cubic feet) of air per minute to a pressure of 6 bar (90 PSI) is approximately 5.2 kW. At an electricity cost of $0.10/kWh this leakage is costing over 50 cents per hour in electricity consumption alone. In a 24/7/365 operation that amounts to $4500 per year!<br /> <br /> <strong>Calculating the cost</strong><br /> <br /> While a leakage rate of 10% of flow rate may sound high and would be unsustainable in a hydraulic system, air leakage rates as high as 25% are not unheard of - even in apparently well maintained pneumatic systems. The actual leakage rate of a system can be calculated using the following formula:<br /> <br /> QL = QC* t / (T+t)<br /> <br /> Where:<br /> QL = System leakage rate (cubic meters/minute)<br /> QC = Compressor FAD (cubic meters/minute)<br /> T = Leakage time - time between compressor cut-out and cut-in (minutes)<br /> t = Charging time - time between compressor cut-in and cut-out (minutes)<br /> Note: this formula assumes that all system consumption is suspended while the leakage test is conducted.</p> <p><strong>Conclusion</strong><br /> <br /> As demonstrated by the above example, the annual cost of air leaks in pneumatic systems can be significant - in power consumption alone. Conduct regular leakage tests on your pneumatic systems and take necessary action to locate and rectify leaks as required. For more on the operation and maintenance of compressed air systems and pneumatic equipment visit: <a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=pciasp">www.IndustrialPneumaticControl.com</a><br /> <br /> And bottom line: tolerating leaks, whether they&#39;re air or oil is 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>.</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/why-you-should-fix-those-annoying-oil-and-air-leaks#comments Hydraulics At Work Tue, 12 Jan 2016 06:40:00 +0000 35541 at http://hydraulicspneumatics.com Catalog Features High-Pressure Cylinders, Components http://hydraulicspneumatics.com/news/catalog-features-high-pressure-cylinders-components <div class="node-body article-body"><p>BVA Hydraulic&rsquo;s Built-to-Last catalog contains more than 70 pages of information describing hydraulic cylinders, power units, pumps, tools, and other components with working pressures up to 10,000 psi. Cylinders are available in a wide variety of sizes and configurations for general and specialty lifting, compression, and tension functions. Pumps and power units can be supplied with electric, gas, or diesel prime movers, or as air-powered or manually operated units.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/seals/hercules-2015-new-products-catalog ">Hercules 2015 New Products Catalog</a></p> <p><a href="http://hydraulicspneumatics.com/pneumatic-valves/new-catalog-covers-vehicle-air-valves-controls ">New Catalog Covers Vehicle Air Valves, Controls</a></p> <p><a href="http://hydraulicspneumatics.com/technologies/2015-fluid-power-manufacturers-index">2015 Fluid Power Manufacturers Index</a></p> </div> <p>The catalog includes dimensional drawings, rating tables, descriptive photos, and list of features and benefits.&nbsp;Call (888) 332-6419 for more information, or visit <a href="http://www.bvahydraulics.com/" target="_blank">www.bvahydraulics.com</a> to download a copy of the catalog as a <a href="http://www.bvahydraulics.com/Catalogs/BVA%20Hydraulics/1913" target="_blank">PDF file</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/catalog-features-high-pressure-cylinders-components#comments Cylinders & Actuators News Mon, 11 Jan 2016 22:10:00 +0000 35491 at http://hydraulicspneumatics.com Motion Industries Restructures Top Organizational Positions http://hydraulicspneumatics.com/news/motion-industries-restructures-top-organizational-positions <div class="node-body article-body"><p><a href="http://www.motionindustries.com/">Motion Industries</a>, distributor of industrial-maintenance, repair, and operation replacement parts, announced several key changes as part of its organizational structure alignment, effective January 1, 2016.</p> <p>&quot;After careful review and consideration, we have identified several areas of strength to leverage,&quot; says Motion Industries&#39; President and CEO, Tim Breen. &quot;I feel these changes will better prepare us for the opportunities and challenges ahead.&quot;</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/news/catalog-features-high-pressure-cylinders-components">Catalog Features High-Pressure Cylinders, Components</a></p> <p><a href="http://hydraulicspneumatics.com/news/motion-industries-chairman-retires">Motion Industries Chairman Retires</a></p> <p><a href="http://hydraulicspneumatics.com/news/motion-industries-launches-industrial-solutions-website">Motion Industries Launches Industrial Solutions Website</a></p> </div> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/RandyBreaux.jpg" style="width: 150px; height: 210px; margin: 3px; float: left;" title="1. Randy Breaux is appointed Senior Vice President of Marketing." />The company appointed Randy Breaux as Senior Vice President of Marketing, Distribution and Purchasing. In this new role, Breaux will retain current responsibility for Marketing and Strategic Planning, and oversee additions to organizational structure. He joined Motion Industries in 2011 as Senior Vice President of Marketing after more than 20 years at Baldor Electric Co. In 2014, he was promoted to his most recent position of Senior Vice President, Southern U.S., Marketing and Strategic Planning.&nbsp;</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/TonyCefalu_1.jpg" style="width: 150px; height: 210px; margin: 3px; float: right;" title="2. Tony Cefalu is named Senior Vice President of Hose &amp; Rubber, Shops and Service Centers." />Tony Cefalu was named Senior Vice President of Hose &amp; Rubber, Shops and Service Centers. In this new position, Cefalu has the added responsibility for Shops and Service Centers, including Automation, Fluid Power, Pumps and Repair. Cefalu started his career with the Berry Bearing Company in 1983, which became part of Motion Industries in 1993. He held positions of Manager of Hose and Rubber, Regional Manager, Vice President/General Manager of the Chicago Division, Group Vice President of Mi Hose &amp; Rubber, and Senior Vice President/Group Executive for the Central Group and Mi Hose &amp; Rubber. In 2014, Cefalu was promoted to his previous position of Senior Vice President, Eastern U.S. and Mi Hose &amp; Rubber.&nbsp;</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/KevinStorer.jpg" style="width: 150px; height: 210px; margin: 3px; float: left;" title="3. Kevin Storer is appointed Senior Vice President of U.S. Operations and President of Mi Mexico." />Kevin Storer was named Senior Vice President of U.S. Operations, President of Mi Mexico. In addition to his responsibility for Motion&rsquo;s Mexico operation, Storer&rsquo;s new role will include all U.S. branch and field sales operations. Storer began his career with Motion Industries in the West Group in 1987, and was a Branch Manager and Regional Manager prior to becoming Vice President/General Manager of Motion&rsquo;s Los Angeles Division in 2000. In 2006, he was promoted to Senior Vice President/Group Executive for the West Group, and in 2014, elevated to Senior Vice President, Western U.S. and President of Mi Mexico.</p> <p>Mr. Breen adds, &quot;We are excited about these changes and the growth potential these three executives represent for our operations, sales, and services areas in 2016 and beyond. The impact from their expanded leadership roles, along with our Motion team&rsquo;s outstanding execution, will continue driving new opportunities for Motion Industries in the future.&quot;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/motion-industries-restructures-top-organizational-positions#comments News Fri, 08 Jan 2016 15:21:00 +0000 35531 at http://hydraulicspneumatics.com Reliable Plant 2016 Conference & Exhibition http://hydraulicspneumatics.com/reliable-plant-2016-conference-exhibition <div class="node-body event-body"></div> <h3 class="location-locations-header">Location</h3> <div class="location-locations-wrapper"> <div class="location vcard"> <div class="adr"> <span class="fn">Kentucky International Convention Center</span> <div class="street-address"> 221 S 4th St. </div> <span class="locality">Louisville</span>, <span class="region">KY</span> <span class="postal-code">40202</span> <div class="country-name">United States</div> <span class="geo"><abbr class="latitude" title="38.254355">38° 15' 15.678" N</abbr>, <abbr class="longitude" title="-85.755295">85° 45' 19.062" W</abbr></span> </div> <div class="map-link"> <div class="location map-link">See map: <a href="http://maps.google.com?q=38.254355+-85.755295+%28221+S+4th+St.%2C+Louisville%2C+KY%2C+40202%2C+us%29">Google Maps</a></div> </div> </div> </div> <div class="field-desc"> <p>From learning sessions and case studies to the latest technologies featured in the exhibit hall, the Reliable Plant Conference covers every facet of industrial lubrication, oil analysis and reliability in one three-day event. Realize immediate bottom-line results by obtaining real-world information and processes that you can put into practice as soon you get home.</p> <p>Professionals in the machinery lubrication and oil analysis industry usually wear many different hats to promote reliability and ensure bottom-line results. Whether&nbsp; entry-level or a seasoned member of a plant&rsquo;s management team, attendees will benefit from the comprehensive schedule of sessions, case studies, and peer interactions throughout the week.</p> <h3>Exhibits</h3> <p>Wander the expansive exhibit hall and discover tools and solutions among a comprehensive group of global suppliers representing various disciplines of industrial lubrication and oil analysis. With more than 150,000 ft<sup>2</sup> of exhibit hall space, attendees can meet with more than 100 exhibitors highlighting innovative products and services over the course of three days. Unwind in the &ldquo;Relaxation Station&rdquo;, network with colleagues during lunch breaks and receptions, gather hands-on information and generate ideas to address specific needs.<br /> The exhibit hall will be open 9:30 AM to 5:30 PM Tuesday, April 5; 9:30 AM to 6:30 PM Wednesday, April 6; and 8:50 AM to 12:00 PM Thursday, April 7.<br /> <strong><a href="http://conference.reliableplant.com/exhibition/#exhibitors" target="_blank">Click here</a></strong> to view a list of exhibitors.<br /> <strong><a href="http://3uw151281qrd3y2fuhbtig1j.wpengine.netdna-cdn.com/wp-content/uploads/2015/10/RP2016_FloorPlan.pdf" target="_blank">Click here</a></strong> to download a PDF of the exhibit hall floor plan.</p> <p><em>For more information, including details about special offers, group discounts, travel and accommodations, a downloadable brochure, registration information and fee schedules, visit <strong><a href="http://conference.reliableplant.com/" target="_blank">http://conference.reliableplant.com</a></strong>, call Noria Corp. at (800) 597-5460, or email <strong><a href="#">ggodfrey@noria.com</a></strong>.</em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/reliable-plant-2016-conference-exhibition#comments 38.254355 -85.755295 Wed, 06 Jan 2016 17:41:00 +0000 35521 at http://hydraulicspneumatics.com How To Extend Hydraulic Hose Life http://hydraulicspneumatics.com/blog/how-extend-hydraulic-hose-life <div class="node-body blog-body"><p>Hydraulic hose has a finite service life, which can be reduced by a number of factors. From a maintenance perspective, little or no attention is usually paid to the hoses of a hydraulic machine until a failure occurs. And hydraulic hose failures cost more than the replacement hose. Additional costs can include:</p> <ul> <li>Clean up, disposal and replacement of lost hydraulic oil.</li> <li>Collateral damage to other components, e.g. a hose failure on a hydrostatic transmission can result in loss of charge pressure and cavitation damage to the transmission pump and/or motor.</li> <li>Possible damage caused by the ingression of contaminants.</li> <li>Machine downtime.</li> </ul> <p>Focus on the following issue to extend hydraulic hose life and minimize the costs associated with hydraulic hose failures:<br /> <br /> <strong>External damage</strong><br /> <br /> Hydraulic hose manufacturers estimate that 80% of hose failures are attributable to external physical damage through pulling, kinking, crushing or abrasion of the hose. Abrasion caused by hoses rubbing against each other or surrounding surfaces is the most common type of damage.<br /> <br /> To prevent external damage, ensure all clamps are kept secure, pay careful attention to routing whenever a replacement hose is installed and if necessary, apply inexpensive polyethylene spiral wrap to protect hydraulic hoses from abrasion.<br /> <br /> <strong>Multi-plane bending</strong><br /> <br /> Bending a hydraulic hose in more than one plane results in twisting of its wire reinforcement. A twist of five degrees can reduce the service life of a high-pressure hydraulic hose by as much as 70%. And a seven degree twist can result in a 90% reduction in service life.<br /> <br /> Multi-plane bending is usually the result of poor hose-assembly selection and/or routing but can also occur as a result of inadequate or unsecure clamping where the hose is subjected to machine or actuator movement.<br /> <br /> <strong>Operating conditions</strong><br /> <br /> The operating conditions that a correctly installed hydraulic hose is subjected to will ultimately determine its service life. Extremes in temperature, e.g. high daytime operating temperatures and very cold conditions when the machine is standing at night, accelerate aging of the hose&#39;s tube and cover.<br /> <br /> Frequent and extreme pressure fluctuations, e.g. rock hammer on a hydraulic excavator, accelerate hose fatigue. In applications where a two-wire braid reinforced hydraulic hose meets the nominal working pressure requirement but high dynamic pressure conditions are expected, the longer service life afforded by a spiral reinforced hydraulic hose will usually more than offset the higher initial cost.<br /> <br /> <strong>Bottom line</strong>: neglecting the hoses on a hydraulic machine 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>.</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/how-extend-hydraulic-hose-life#comments Hydraulics At Work Tue, 05 Jan 2016 00:36:00 +0000 35501 at http://hydraulicspneumatics.com Free* Webinar: Job Postings That Get Results http://hydraulicspneumatics.com/free-webinar-job-postings-get-results <div class="node-body event-body"></div> <h3 class="location-locations-header">Location</h3> <div class="location-locations-wrapper"> <div class="location vcard"> <div class="adr"> <span class="fn">NAHAD — The Association for Hose and Accessories Distribution</span> <span class="postal-code"> </span> <div class="country-name">United States</div> </div> <div class="map-link"> <div class="location map-link">See map: <a href="http://maps.google.com?q=%2C+%2C+%2C++%2C+us">Google Maps</a></div> </div> </div> </div> <div class="field-desc"> <p>Launch your search for quality entry level employees armed with a well-crafted job description to attract candidates that will match your need. Attendees can expect to receive valuable recruitment resources from one of the most effective HR advisors in the country. The online webinar will be held Monday, January 25, 2016 from 2:00 to 3:00 EST.</p> <p>Join one of the most effective HR advisors in the country, Nancye M. Combs, AEP-SPHR, to learn how to launch your search for quality entry-level employees. Nancye has more than 35 years experience and has worked extensively in the industrial field. You&#39;ll learn:<br /> <strong>&bull;</strong> How a well-crafted job description will attract the candidates to match your needs<br /> <strong>&bull;</strong> Where top candidates look for new opportunities<br /> <strong>&bull;</strong> Keywords to get the ad to a larger audience<br /> <strong>&bull;</strong> Questions you can ask to screen candidates quickly</p> <p>*This webinar is FREE to Industrial Careers Pathway (ICP), a multifaceted North American work force initiative.&nbsp;ICP links students and job seekers to career paths in industrial distribution and manufacturing through partnerships with local educators and employers. ICP is supported by an alliance of industry associations including:<br /> American Supply Association,<br /> Industrial Supply Association Education Foundation,<br /> National Association of Chemical Distributors,<br /> National Association of Electrical Distributors Education &amp; Research Foundation,<br /> NAHAD-The Association for Hose &amp; Accessories Distribution,<br /> NIBA-The Belting Association, and<br /> PTDA Foundation.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/free-webinar-job-postings-get-results#comments Mon, 04 Jan 2016 19:21:00 +0000 35471 at http://hydraulicspneumatics.com Looking to Find Good Candidates to Hire? Learn How to Write Effective Job Postings http://hydraulicspneumatics.com/blog/looking-find-good-candidates-hire-learn-how-write-effective-job-postings <div class="node-body blog-body"><p><a href="http://www.nahad.org" target="_blank">NAHAD</a> &mdash; The Association for Hose and Accessories Distribution just announced that it will conduct a one-hour webinar on finding good candidates for job openings.</p> <p>The webinar will be held Monday, January 25 from 2:00 to 3:00 Eastern Standard Time and is free to members of the Alliance of Industry Associations, which includes:<br /> <img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Nancye%20M%20Combs2.jpg" style="width: 150px; height: 177px; float: right; margin-left: 4px; margin-right: 4px;" /><strong>&bull;</strong> American Supply Association<br /> <strong>&bull;</strong> Industrial Supply Association Education Foundation<br /> <strong>&bull;</strong> National Association of Chemical Distributors<br /> <strong>&bull;</strong> National Association of Electrical Distributors Education &amp; Research Foundation<br /> <strong>&bull;</strong> NAHAD-The Association for Hose &amp; Accessories Distribution<br /> <strong>&bull;</strong> NIBA-The Belting Association<br /> <strong>&bull;</strong> PTDA Foundation</p> <p>The presenter, Nancye M. Combs, AEP, SPHR, has more than 35 years of experience in the field and has consulted with many organizations in the industrial distribution and manufacturing sectors. Check out the short video below by Nancye that outlines the two critical challenges in hiring sales staff:</p> <p><iframe allowfullscreen="" frameborder="0" height="335" src="https://www.youtube.com/embed/759AYRULCC8" width="595"></iframe></p> <p><strong><a href="/free-webinar-job-postings-get-results" target="_blank">Click here</a></strong> for more information and a link to registration.</p> <p>&nbsp;</p> </div> <div class="field-content-focus"> <span>Content Classification:&nbsp;</span> Curated </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/looking-find-good-candidates-hire-learn-how-write-effective-job-postings#comments The Hitch Post Mon, 04 Jan 2016 18:29:00 +0000 35481 at http://hydraulicspneumatics.com Durable, Compact and Energy Efficient Air-Driven Liquid Pumps from Interface Devices http://hydraulicspneumatics.com/products/durable-compact-and-energy-efficient-air-driven-liquid-pumps-interface-devices <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/11/Interface-200.gif" style="margin: 2px; width: 200px; height: 113px; float: right;" />Interface Devices&rsquo;&nbsp;line of air-driven liquid pumps are durable, compact and energy efficient. The E, H &amp; P Series features a low-maintenance plug-and-play design with integrated air and hydraulic circuit options.&nbsp;Peak hydraulic horsepower output of 1.35 (1 kW) @ 2/3 stall pressure, max air consumption of 29 scfm and pressures to 10,000 psi (680 bar).&nbsp;Custom, application-specific models can be designed and built by our experienced engineering staff.<br /> <br /> Interface Devices<br /> <a href="http://www.interfacedevices.com/products/air-driven-liquid-pumps/custom-intensifier.php?utm_source=HP&utm_medium=Web&utm_content=ProdInnov&utm_campaign=201602_PlugPlay" target="_blank"><b>www.interfacedevices.com</b></a><br clear="”all”" /> &nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/products/durable-compact-and-energy-efficient-air-driven-liquid-pumps-interface-devices#comments Products Hydraulic Valves Wed, 30 Dec 2015 14:30:00 +0000 11131 at http://hydraulicspneumatics.com Fluid-Power Authority Russ Henke Dies After 60-Year Career http://hydraulicspneumatics.com/hydraulic-pumps-motors/fluid-power-authority-russ-henke-dies-after-60-year-career <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/RHenke.gif" style="width: 350px; height: 403px; float: left;" title="Russ Henke" /></p> <p>Russell W Henke, P. E., a true driving force in establishing the <a href="http://www.msoe.edu/academics/labs/fluid-power-institute/" target="_blank">Fluid Power Institute at the Milwaukee School of Engineering (MSOE)</a>, died November 2, 2015 after a long battle with Alzheimer&rsquo;s disease. Born April 28, 1924, Henke graduated with honors from the University of Wisconsin with a BS in Mechanical Engineering. Prior to that, he joined the U.S. Navy at age 19, trained for flight school, and served in the Pacific on an aircraft carrier during World War II.</p> <p>As a faculty member at MSOE, Henke established the country&rsquo;s first accredited fluid-power curriculum in 1958. The program began as non-credit evening course, evolved into an associate degree in fluid-power engineering technology, and culminated as a major in fluid power under MSOE&rsquo;s BSME and BSEE programs. While a faculty member at MSOE, he and several local fluid-power companies established MSOE&rsquo;s Fluid Power Institute in 1962. Henke served as its first director until 1968, when he became executive director of the Fluid Power Society.</p> <p>During his long career in fluid power, he served as Director of Research and Development at Racine Hydraulics, Director of Engineering at American Marietta Corp., Chief Research and Development Engineer at Badge Meter Co., and later founded Fluid Power Consultants International. In this capacity, he traveled internationally for fluid-power engineering consulting and education, and often served as an expert witness in litigation.</p> <p>He authored and co-authored several technical textbooks, including <em>Fluid Power Systems &amp; Circuits</em>, which is still sold by <em>Hydraulics &amp; Pneumatics</em>. He also wrote dozens of technical articles for <em>Hydraulics &amp; Pneumatics</em>, <em>Machine Design</em>, and <em>Diesel Progress</em> magazines, and taught continuing education classes on fluid power at the University of Wisconsin-Milwaukee.</p> <p>Henke is survived by his wife of 68 years, Connie; son, Christopher (Ahura); and daughter, Pamela (Jerome) Luedtke.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/fluid-power-authority-russ-henke-dies-after-60-year-career#comments Hydraulic Pumps & Motors Wed, 23 Dec 2015 20:25:00 +0000 35461 at http://hydraulicspneumatics.com Servopneumatics Helps Spruce Up Subway Tunnels http://hydraulicspneumatics.com/rail-truck-bus/servopneumatics-helps-spruce-subway-tunnels <div class="field-deck"> Tentacle-like suction nozzles and suction feet are positioned using the latest servopneumatics from Festo </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/servopneumatics-spruces-subway-tunnels-pdf-download">Download this article as a .PDF file</a><br /> This file type includes high-resolution graphics and schematics when applicable.</td> </tr> </tbody> </table> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/03/00171-tunnel-cleaning.gif" style="width: 595px; height: 345px;" title="This train uses closed-loop servopneumatics to help clean subway tunnels. The process is faster, more economical, and more effective than manual cleaning methods." /></p> <p>Extensive subway networks are an essential component of large cities worldwide. Subway trains move millions of people every day quickly and with no direct emissions, thanks to their electric drives.</p> <p>However, just as the stations must be cleaned regularly, so do the tunnels. In particular, fine dust deposits accumulate over time, which can lead to increased maintenance and wear on the trains, as well as have a negative impact on the health of passengers and transit staff.</p> <div class="related-content"> <div class="related-label">Related</div> <p><a href="http://hydraulicspneumatics.com/construction/movers-and-shakers-ride-rails">Movers and Shakers Ride the Rails</a></p> <p><a href="http://hydraulicspneumatics.com/controls-instrumentation/closing-loop-pneumatic-drive-control">Closing the Loop on Pneumatic Drive Control</a></p> <p><a href="http://hydraulicspneumatics.com/controls-amp-instrumentation/electronic-controls-deliver-precise-pneumatic-motion">Electronic Controls Deliver Precise Pneumatic Motion</a></p> </div> <p>A new type of tunnel maintenance train was built to improve the cleanliness of subways and make the job faster, easier, more effective, and at lower cost. Although the vehicles are driven electrically and use extensive hydraulics to deploy much of the mechanisms, <a href="https://www.festo.com/net/en-us_us/SupportPortal/Downloads/118433/17314/Servopneumatik_en.pdf" target="_blank">servopneumatics</a> from <a href="http://www.festo.com/us" target="_blank">Festo Corp.</a> plays a key role in the cleaning process.</p> <p><strong>Cleaning Vehicle is No Lightweight</strong></p> <p>The tunnel-cleaning train weighs 85 metric tons (94 t) and is 40 m (130 ft.) long. The cleaning unit itself is located between locomotives at both ends of the train. The tunnel-cleaning train is faster, more economical, and more effective than manual cleaning. It moves at up to 5 km/hr (3 mph) while cleaning and can reach 70-km/hr (45 mph) speeds while in transit. Each locomotive has a driver&#39;s cabin, so the train can clean from either direction without having to turn round.</p> <p>The front and rear halves of the train are nearly identical, with each half having its own hydraulic and pneumatic system. The hydraulic systems, mounted directly behind the driver&#39;s cabs, provide consistent results because they automatically adjust parameters according to the train&rsquo;s speed. &nbsp;Each half of the train also contains three air turbines, which produce 6 m<sup>3</sup>/sec of air flow to clean tunnel surfaces.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Festo-28.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/Festo-28.jpg" style="width: 595px; height: 560px; margin-left: 4px; margin-right: 4px;" title="Clockwise from upper left shows Festo's compact VTSA valve terminals; MSB6 compressed air filters for smooth, reliable, and long-life operation of pneumatic components; one of 16 DNCI-63 cylinders with integrated displacement encoders to ensure rapid response and precise positioning; cleaning unit with its movable suction nozzles and feet." /></a></p> <p>The discharge side of the turbines generates the compressed air to blast dust, dirt, and debris from the walls. The suction side pulls a partial vacuum to immediately draw the dirt-laden air into the train&rsquo;s filtration system. Dense debris falls into collecting bins and airborne particles are filtered out before the air is discharged.</p> <p><strong>Keeping the Profile in View</strong></p> <p>With a clearance of between 100 mm and 300 mm, the suction nozzles and suction feet follow the tunnel wall and track bed as the vehicle advances through a tunnel. Two laser scanners at both ends of the train constantly sense the tunnel profile. The system controller analyzes the contours of the next 20-m section in fractions of a second and sends appropriate control pulses to the individual suction nozzles. Therefore, the changing positions of the cleaning units remain close enough to the tunnel walls to effectively remove dirt at all times. If the laser scanners detect obstacles, such as signs or electronic switch boxes, the control simply retracts the respective suction arms to prevent impact.</p> <p>This gigantic cleaning system is operated by just two people&mdash;a locomotive driver and the machine operator. Video cameras and eight monitors per driver&rsquo;s cab allow for constant supervision of the most important areas of the machine. Depending on the type of application, up to seven people can fit into each of the two driver&rsquo;s cabs.</p> <p><strong>Servopneumatics for Increased Safety</strong></p> <p>Festo&rsquo;s closed-loop servopneumatic system offers fast response for precise positioning, and the compliance of pneumatics offers safe operation by automatically accounting for inevitable surface irregularities as the train advances through the tunnel. The quick and safe movement of the suction nozzles and suction feet is the work of the latest servopneumatics from Festo, which supplied two MSB6 service unit combinations and 16 standard <a href="https://www.festo.com/net/en-us_us/SupportPortal/Downloads/8014/12478/PSI_136_1_en.pdf" target="_blank">DNCI-63 cylinders with integrated displacement encoder</a>, including 16 position <a href="https://www.festo.com/cat/en-us_us/data/doc_ENUS/PDF/US/CPX-CMAX_ENUS.PDF" target="_blank">CPX-CMAX</a> controllers to ensure that the suction nozzles and feet move quickly into their programmed positions.</p> <p>Even large loads can be accelerated and decelerated with high dynamic response. Sixteen proportional valves control the supply and exhaust air to and from the cylinders. The CPX system is the automation platform, serving both as an electric terminal equipped with Festo&#39;s CMAX controllers and as a valve terminal equipped with <a href="https://www.festo.com/net/en-us_us/SupportPortal/Downloads/143047/26956/ISO_valve_terminal_VTSA%e2%80%93maximum_functionality.pdf" target="_blank">VTSA</a> valves for additional switching functions in the system.</p> <p><a href="http://www.sickinsight-online.com/tunnel-cleaning-train-schoerling-uses-sensor-technology-from-sick-for-innovative-project/" target="_blank"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/02/%20Sensor.jpg" style="width: 300px; height: 177px; float: left; margin-left: 4px; margin-right: 4px;" title="Click on the image to learn about the application of sensors that scan ahead of the train so that assemblies can quickly move out of the way to avoid hitting obstacles." /></a>A laser scanner at each end of the train is moved by&nbsp;DGCI-40 rodless cylinder with integrated displacement encoder and commanded through a <a href="https://www.festo.com/cat/en-us_us/data/doc_ENUS/PDF/US/VPWP_ENUS.PDF" target="_blank">VPWP-8 proportional valve</a>. The fast, precise interaction between cylinder and valve provides optimum positioning of the scanners, allowing them to supply accurate data about the expected tunnel profile to the system controller.</p> <p><strong>Small Space, Safe Operation</strong></p> <p>The train&#39;s designers specified Festo&#39;s easy-to-install and space-saving double <a href="http://www.festo.com/cat/en-us_us/data/doc_ENUS/PDF/US/VABP_ENUS.PDF" target="_blank">VABP sub-base</a>. It replaces multiple individual components that had been used for various emergency-stop functions of servopneumatic axes. The OEM&#39;s project manager explains, &ldquo;Installed between the drive and power valve, the sub-base enables different switch-off functions to be realized using only one unit for<br /> stopping, exhausting, reversing left or right with reduced speed, and pressure compensation.&rdquo;</p> <p>Compared to solutions that must be assembled using individual components, the double sub-base VABP and ISO <a href="https://www.festo.com/net/en-us_us/SupportPortal/Downloads/10367/10179/VSVA-C_ENUS.pdf" target="_blank">VSVA</a> switching valves make it easier for the customer to evaluate the system according to EN Machinery Directive <a href="http://www.iso.org/iso/catalogue_detail.htm?csnumber=34931" target="_blank">ISO 13849-1</a> and to determine the Performance Level that can be achieved.</p> <p><strong>Cooperation from Day One</strong></p> <p>The latest model of the tunnel-cleaning train is being used in Beijing&rsquo;s underground rail system. Its network is around 460 km long, making it the largest in the world. The project manager says the design process, from initial discussions with the underground rail operators in China to completion of the tunnel-cleaning train, took just seven months. &ldquo;For us, it was hugely important that we had a partner like Festo.&rdquo;</p> <p>Only a few months after both companies met at the 2012 Hannover Fair, a prototype for the servopneumatic system was developed. This was then used to produce the final product. Service technicians from Festo delivered and commissioned the entire servopneumatic&nbsp; system for moving and controlling the suction nozzles. In addition to fast delivery of the technological hardware, the worldwide service provided by Festo was a major selling point for the OEM. This will help ensure a clean environment for people and machines in the tunnels of underground rail networks all over the world.</p> <p><em>For more information, call Festo, Hauppauge, N.Y., at (800) 993-3786, or visit <a href="http://www.festo.com/us" target="_blank">www.festo.com/us</a>.</em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/rail-truck-bus/servopneumatics-helps-spruce-subway-tunnels#comments Cylinders & Actuators Rail, Truck & Bus Pneumatic Valves Wed, 23 Dec 2015 19:58:00 +0000 35441 at http://hydraulicspneumatics.com