Hydraulics & Pneumatics - Hydraulics & Pneumatics is the leading international technical resource for fluid power http://hydraulicspneumatics.com/rss.xml en Hydraulic Quadraped Uses E024-LA Mini Servo Valves http://hydraulicspneumatics.com/news/hydraulic-quadraped-uses-e024-la-mini-servo-valves <div class="node-body article-body"><p>HyQ, the hydraulically actuated quadruped, is a responsive running, jumping robot designed by researchers at the&nbsp;<a href="http://www.iit.it/en/advr-labs/dynamic-legged-systems.html" target="_blank">Institute Italiano di Tecnologia</a>. Hydraulic cylinders at the leg joints generate torque for&nbsp;movement and produce high load-bearing capability and impact resilience. A broad bandwidth for hydraulic actuation is provided by high-performance, compact&nbsp;<a href="http://www.moog.com/markets/motorsport/e024-series-servo-valves-for-formula-1/" target="_blank">E024-LA mini servo valves</a>&nbsp;supplied by&nbsp;<a href="http://www.moog.com/" target="_blank">Moog Industrial Group</a>.</p> <p>Originally used in F1 race cars, the E024-LA servo valve is powerful and lightweight, weighing only 5.25 ounces and supplying a maximum pressure of 14.5 psi The E024-LA servo valves provide high bandwidth of 250 Hz for hydraulic liquid flowrate. Paired with the high bandwidth servo valves, the naturally high hydraulic stiffness gives a broader range for torque control, a high frequency response, and rigidity/elasticity modulation for the limbs.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/E024_800_Series_with_LVDT.JPG" style="width: 595px; height: 359px; border-width: 3px; border-style: solid; margin-left: 3px; margin-right: 3px;" title="Figure 1: Moog E024-LA mini servo valve " /></p> <p>Researchers at IIT chose a hydroelectric design for the HyQ to meet the robot&rsquo;s design requirements. While the HyQ is able to demonstrate quasi-static movements such as walking or climbing, it is also able to perform highly dynamic and impactful movements like trotting, running, and jumping without breaking or falling over in the process. This requires robustness and high capacity for severe loading of the actuation system. Lastly, the HyQ fulfills both previous requirements in rugged terrain and random environments, where obstacles may obstruct the HyQ&rsquo;s route of travel. This requires a reliable feedforward signal, or pre-calculated signal, to predict the robot&rsquo;s next movement. It also requires effective feedback for torque regulation.</p> <div class="related-content"> <div class="related-label"> Related</div> <p><a href="http://hydraulicspneumatics.com/200/TechZone/SystemInstrumen/Article/False/88287/TechZone-SystemInstrumen ">Hydraulic robot provides precise positioning</a></p> <p><a href="http://hydraulicspneumatics.com/200/TechZone/Cylinders/Article/False/86387/TechZone-Cylinders">Servopneumatics lets robot mimic nature</a></p> <p><a href="http://hydraulicspneumatics.com/cylinders-actuators/hydraulic-cylinder-testing-unit-records-pressures-3000-psi">Hydraulic Cylinder Testing Unit Records Pressures to 3000 psi</a></p> </div> <p>Hydroelectric actuation provides higher torque and better torque control than the high-gear-ratio electronics that are commonly used in robotics. Unlike hydraulics, electronic gear systems are more likely to break under impact or high loading and are not suited for robots like HyQ that need to be robust or produce a high torque for dynamic movements. Electronic systems require several gears for precise torque control and can be bulky and rigid.</p> <p>The fast acting E024-LA servo valves are ideal for quick changes in direction or leg movement. The compactness of the hydraulic system and the convenience of a single reservoir to all actuators allow room for other features like motion and inertia sensors.</p> <p>The HyQ&rsquo;s movements are torque-controlled. Figure 2 shows the torque control schematic containing an outer position loop and an inner torque loop. Inverse-dynamic feedforward torque is the primary input to the inner torque loop in the control scheme. Feedforward torque is pre-calculated using rigid-body inverse dynamics and is used to predict the robot&rsquo;s next movement. Positional negative feedback is used to regulate torque when an obstacle occurs, but at a low gain so that the robot does not retract or stop when it encounters an obstacle.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/blockDiagram.gif" style="width: 595px; height: 243px;" title="Figure 2: Control schematic containing an inner torque loop and an outer position loop. the inverse dynamics control calculates feedforward torque needed to generate a desired movement at the leg joints. It is the main input to the inner torque loop." /></p> <p>Torque inputs from positional feedback and dynamic data are directed to the inner torque loop (Figure 2) for further processing. A torque controller receives these inputs, processes them, and then commands the Moog E024-LA mini servo valve to increase or decrease fluid pressure in the cylinders. The resulting torque generated by the cylinders generates feedback to the torque controller for further modification; the torque control system not only responds to feedforward inverse dynamics calculations or feedback position control, but also to the hydraulic feedback of the robot.&nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/hydraulic-quadraped-uses-e024-la-mini-servo-valves#comments News Fri, 30 Jan 2015 16:47:00 +0000 30551 at http://hydraulicspneumatics.com Capacity Controls Deliver Energy—and Cost—Savings http://hydraulicspneumatics.com/controls-instrumentation/capacity-controls-deliver-energy-and-cost-savings <div class="field-deck"> The greatest opportunity to save power, particularly in multiple-compressor facilities, lies in correcting the misuse or poor application of compressor-unloading controls. </div> <div class="node-body article-body"><p>We have seen instances where a plant staff embarked on a significant compressed-air conservation program on the demand side, resolving issues such as:</p> <p><strong>Ÿ</strong>&bull;Identifying and repairing air leaks</p> <p>Ÿ&bull;Eliminating open blowing</p> <p>&bull;Fixing malfunctioning condensate drains</p> <p>&bull;Managing all potential inappropriate uses</p> <p>After successful completion of the program, the staff found that the facility was consuming less compressed air for production, but electrical-energy consumption did not go down proportionally. The reason: Without appropriate capacity controls operating correctly on compressors, it is impossible to effectively translate lower air use into lower electrical-energy input.</p> <div class="related-content"> <div class="related-label"> Related</div> <p><a href="http://hydraulicspneumatics.com/hydraulic-pumps-motors/pump-controls-optimize-hpu-performance ">Pump Controls Optimize HPU Performance</a></p> <p><a href="http://hydraulicspneumatics.com/other-technologies/chapter-9-relief-and-unloading-pressure-controls ">CHAPTER 9: Relief and Unloading Pressure Controls</a></p> <p><a href="http://hydraulicspneumatics.com/200/IndZone/Agricultural/Article/False/83592/IndZone-Agricultural">Electrohydraulic controls double machine&rsquo;s productivity</a></p> </div> <p>When working effectively, compressor-unloading controls should:</p> <p>Ÿ&bull; Match air supply to demand when needed to eliminate or minimize system overpressure</p> <p>Ÿ&bull; Maintain the necessary minimum acceptable operating-system pressure</p> <p>Ÿ&bull; Reduce the input power cost to the optimum point proportional to the air flow demand</p> <p>Ÿ&bull; Turn off unneeded air compressors and bring them back on when required</p> <p>Regardless of the type of air compressor, the operating principles of capacity controls can be grouped into several basic categories. (Note that some will only perform on certain types of compressors.) The following are descriptions, as well as pros and cons, of these categories.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/2001.04-VanOrmer-tableWEB.gif" style="width: 595px; height: 257px; margin: 3px;" /></p> <p><strong>Automatic start-stop (AS-S) </strong></p> <p>This control simply starts and stops the electric motor or driver automatically. It can operate any type of compressor. A pressure switch usually accomplishes this function, shutting off the motor at the upper pressure limit and restarting it at the minimum system pressure.</p> <p><strong>Pro:</strong> The air compressor runs at its two most efficient modes&mdash;fully loaded and off.</p> <p><strong>Con:</strong> Most AC electric motors can survive only a finite number of starts over a given timeframe, primarily due to heat build-up. This limits the application of AS-S controls, particularly for motors larger than 10 to 25 hp.</p> <p><strong>Con:</strong> The compressor must run above minimum system pressure to hold that pressure.</p> <p><strong>Con:</strong> The system must have adequate air-storage capacity to perform satisfactorily.</p> <p><strong>Continuous-run controls (step type) </strong></p> <p>With these controls, the driver or electric motor runs continuously while the air compressor is unloaded in some manner to match supply to demand. System pressure usually commands the unloading arrangement.</p> <p>Continuous-run controls can be categorized as step or modulating type.</p> <p>The most common is the two-step control, which holds the compressor inlet either fully open or fully shut. Over the complete operational band, the compressor runs fully loaded (or at full flow) from the preset minimum pressure (or load point) to the preset maximum pressure (or no-load point).</p> <p>At the latter, the control shuts off air flow completely. The unit then runs at no flow and full idle until system pressure falls back to the load point. Afterward, the control goes immediately to full-flow capacity. A pressure switch typically actuates the two-step control, which can be either the primary control or part of a dual-control system on virtually every type of air compressor. (Some reciprocating compressors can be fitted with 3- and 5-step controls.)</p> <p><strong>Pro:</strong> The compressor runs at its two most efficient modes&mdash;full load and full idle&mdash;which results in the lowest possible input power cost. Full idle at lowest input power is accomplished almost immediately, except in the case of lubricated or lubricant-cooled rotary-screw compressors (see &ldquo;Lubrication and idling&rdquo;).</p> <p><strong>Con:</strong> Both correct piping and adequate air storage are necessary to allow enough idle time over the operational pressure band to generate any significant energy savings.</p> <p><strong>Con:</strong> When two-step controls are misapplied, not only is there little or no power cost savings, but short cycling (in other words, 20 sec. on, 20 sec. off) can damage the equipment and shorten the life of normal wearing parts.</p> <p><strong>Con:</strong> Too much backpressure in the interconnecting system can cause short cycling or ineffective unloading.</p> <p><strong>Con:</strong> At 85 to 95% loads, step controls consume some extra power because they have to compress at full capacity to a higher pressure just to hold lower design system pressures.</p> <p><strong>Continuous-run controls (modulating type) </strong></p> <p>These controls match supply to demand very accurately all along the operating pressure-band range. Most incorporate some type of regulator, which in effect converts the operating pressure control band into a proportional band. If system pressure fluctuates as little as 1 psi, the modulating control immediately decreases or increases flow proportionally, depending on the signal. (This control generally is installed only on lubricant-cooled rotary-screw and centrifugal compressors.)</p> <p><strong>Pro:</strong> The minimum set system pressure draws the most power. As system demand falls, pressure rises, flow cuts back, and power usage also falls. This leads to savings at higher demand (and is the opposite of two-step unloading, in which the power draw actually increases as system demand falls).</p> <p><strong>Pro:</strong> More efficient at high loads.</p> <p><strong>Pro:</strong> Holds a relatively steady pressure when demand is stable, and responds quickly to any change.</p> <p><strong>Pro:</strong> Does not depend on storage capacity to operate effectively.</p> <p><strong>Con:</strong> Generally, there&rsquo;s greater inefficiency at lower loads.</p> <p><strong>Con:</strong> Too much backpressure in the interconnecting piping can force multiple units into running on part load, when one or more could be shut off.</p> <p><strong>Controls for rotary screw compressors </strong></p> <p>Today, the industry&rsquo;s most commonly used air compressor in sizes above 30 hp is the lubricant-cooled rotary-screw compressor. A significant number (80% to 85%) of these compressors use some form of modulating control as the primary unloading control, or as the upper-range portion of a dual control.</p> <p>Controls for oil-injected rotary-screw compressors come in two forms: <em>throttled inlet</em> and <em>variable displacement</em>.</p> <p>In a <strong>throttled inlet control</strong>, the compressor&rsquo;s inlet valve is opened or closed to match supply to demand as sensed by a pressure regulator. The inlet valve modulates continuously and responds immediately to any change in the sensed system pressure. In effect, flow capacity is controlled by restricting air intake. The control holds a constant system pressure with minimal valve movement at any given steady system demand.</p> <p><strong>Pro:</strong> Smooth, non-cycling control of system pressure is easier on the power train and most other components.</p> <p><strong>Pro:</strong> Relatively efficient at loads from 60 to 100%.</p> <p><strong>Pro:</strong> Will not short cycle, regardless of storage capacity and or piping.</p> <p><strong>Pro:</strong> Simple to operate and maintain.</p> <p><strong>Pro:</strong> Usually results in lower lubricant carryover in lubricated units.</p> <p><strong>Con:</strong> Relatively inefficient at loads below 60%.</p> <p><strong>Con:</strong> Backpressure must be overcome to reach full capacity.</p> <p><strong>Con:</strong> Instant response may make the machine back down and unload, even when flow is needed for the base load.</p> <p><strong>Con:</strong> Sensitivity and rapid reaction make correct piping and backpressure control necessary for optimum operation. (This is true for all types of unloading controls.)</p> <p><strong>Variable-displacement controls</strong> for rotary-screw compressors all match output to demand by modifying or controlling the effective length of the rotor compression volume. The inlet pressure remains the same throughout the turn down, and the compression ratio stays relatively stable. This method of reducing flow without increasing compression ratios holds a power advantage over modulating and/or two-step controls in the operating range from 50% to full load.</p> <p>The two most common of these unloading controls are the spiral-cut high lead valve and the poppet valve. Both methods will open or close selected ports in the compressor cylinder, thus changing the seal-off points. These ports are located at the start of the compression cycle, where pressure is very low. Opening them even a small amount prevents compression from occurring until the rotor tip passes the cylinder bore casing that separates the ports. This effectively reduces the trapped volume of air to be compressed and, consequently, the horsepower needed to compress it.</p> <p><strong>Pro:</strong> Very efficient part-load performance from 50 to 100%.</p> <p><strong>Pro:</strong> Maintains set pressure at minimum system pressure.</p> <p><strong>Pro:</strong> Very responsive.</p> <p><strong>Con:</strong> At higher loads, some units lose efficiency due to increased leakage.</p> <p><strong>Con:</strong> The mechanism is complex.</p> <p><strong>Con:</strong> Still must run two-step or modulation in lower operating range.</p> <p><strong>Variable-speed drives</strong> (VSDs) control the speed of the prime mover. In theory, the performance-unloading curve for compressors powered by VSDs is very attractive. Depending on the type of compressor, model, conditions, etc., unloading can be almost optimal in the range from 50% or 60% to 90% of load, i.e., 75% power could produce close to 75% flow.</p> <p>Variable-speed turbines and engines have proved effective for years on all types of compressors. These drives maintain system pressure at the minimum set point and will immediately modulate as pressure rises in the sensed system.</p> <p>In the world of electric motors, the most commonly applied VSD has been the variable-frequency driver (VFD), usually as a retrofit or part of a special package. VFDs convert 60-Hz alternating current to direct current, and then reconvert it to AC at the frequency required to turn the motor at the desired speed. This conversion usually consumes about 2% to 4% more energy; therefore, VFDs are less efficient at full load than other types of controls.</p> <p>Many VFDs have been installed successfully on lubricant-cooled, rotary-screw compressor packages over the years. However, some areas of concern have limited their economies relative to cost and overall performance, particularly in retrofits.</p> <p>First, the design of some rotary-screw compressors causes efficiency to drop at less than full-load speed. Second, changing speeds can produce harmonic amplification problems that were not considered at the original design speed. Third, the motor itself may have efficiency problems at the low end of the speed range, possibly because of inadequate heat rejection and cooling capacity. Compressors with air ends designed specifically for VFDs will eliminate or minimize many of these potential problems.</p> <p>Another type of VSD is the <strong>switched-reluctance</strong> system. This electrical control converts standard three-phase AC power into two-phase DC. The rectified AC voltage is passed to a bank of capacitors, at which point it is increased to 600-V DC and stored. The bank then supplies the power required by each phase of a brushless motor, eliminating surge currents in the main power supply. The brushless motor has the inherent ability to survive an unlimited number of starts and stops per hour because the absence of inrush current surges keeps its operating temperature low. The true application for any compressor with a variable-speed drive is a trim machine, not the plant air system&rsquo;s base-load unit.</p> <p>Hank van Ormer, president of Air Power USA, Baltimore, Ohio, is also a lecturer and author. For more information, visit <a href="http://www.airpowerusainc.com/" target="_blank">www.airpowerusainc.com</a> or email <a href="mailto:support@airpowerusainc.com">support@airpowerusainc.com</a>. To view or download a list of his books covering best practices with compressed air, visit bit.ly/HP1501APUSA.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/controls-instrumentation/capacity-controls-deliver-energy-and-cost-savings#comments Controls & Instrumentation Thu, 29 Jan 2015 20:55:00 +0000 30541 at http://hydraulicspneumatics.com Norgren Announces Name Change http://hydraulicspneumatics.com/news/norgren-announces-name-change <div class="field-deck"> Norgren products rebranded under IMI Precision Engineering umbrella </div> <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/IMI%20Norgren.png" style="width: 211px; height: 119px; float: right; margin-left: 4px; margin-right: 4px;" />Norgren Inc., Littleton, Colo., a global provider of pneumatic motion and fluid control products and services, will be part of a new division of long-time parent company, <a href="http://www.imiplc.com/" target="_blank">IMI plc</a>. All of IMI&rsquo;s fluid power businesses will be brought into a single division, called <a href="http://www.imiplc.com/our-businesses/imi-precision-engineering.aspx" target="_blank">IMI Precision Engineering</a>. Norgren&rsquo;s international range of products will become IMI Norgren, one of a portfolio of flagship product brands that also includes <a href="http://www.imi-precision.com/imi-buschjost" target="_blank">IMI Buschjost</a>, <a href="http://www.imi-precision.com/imi-fas" target="_blank">IMI FAS</a>, <a href="http://www.imi-precision.com/imi-maxseal" target="_blank">IMI Maxseal</a>, and <a href="http://www.imi-precision.com/imi-herion" target="_blank">IMI Herion</a>.</p> <p>Mark Shellenbarger, Global Marketing Director for IMI Precision Engineering, explained: &ldquo;With IMI Precision Engineering we can now bring all of our world-class products &ndash; including Norgren &ndash; under one clearly named division. This showcases the IMI brand name, brings real clarity to our market and allows us to build on the collective strength of our key product brands.&rdquo;</p> <p>IMI Precision Engineering joins <a href="http://www.imiplc.com/our-businesses/imi-hydronic-engineering.aspx" target="_blank">IMI Hydronic Engineering</a> and <a href="http://www.imiplc.com/our-businesses/imi-critical-engineering.aspx" target="_blank">IMI Critical Engineering</a> as one of three new divisions within IMI. Company addresses, phone numbers and legal entities remain unchanged. For further information visit .</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/norgren-announces-name-change#comments News Thu, 29 Jan 2015 19:04:00 +0000 30531 at http://hydraulicspneumatics.com Seal Supplier Partners with MSOE for New Test Method http://hydraulicspneumatics.com/seals/seal-supplier-partners-msoe-new-test-method <div class="field-deck"> First-of-its kind test for rod wipers sets new industry criteria for contaminant exclusion. </div> <div class="node-body article-body"><p><a href="http://hallite.com/" target="_blank">Hallite Seals Americas Inc.</a>, Wixom, Mich. announced today the successful development of a new test procedure for assessing the amount of dirt and dust that enters a typical hydraulic system through a cylinder&#39;s rod wiper. Developed in cooperation with <a href="http://www.msoe.edu" target="_blank">Milwaukee School of Engineering</a>&rsquo;s (MSOE) <a href="http://www.msoe.edu/fpi" target="_blank">Fluid Power Institute</a>, the test breaks new ground because it features a novel methodology for measuring dry particles attributed to being a major cause of hydraulic system inefficiency, degradation and failure. It also fills a critical need for manufacturers of hydraulic cylinders.<br /> <br /> The rod wiper located in the sealing configuration of a hydraulic cylinder is designed to limit the ingression of dirt, dust and grit, making it one of the most critical system components. However, there is no specific <a href="http://www.iso.org/iso/home.html" target="_blank">ISO</a> method for testing a rod wiper&rsquo;s ability to prevent particles larger than 4, 6, and 14 &micro;m from entering a hydraulic system. These microscopic particle sizes are most damaging to hydraulic systems as referenced in ISO 4406 for coding contamination levels in hydraulic fluids.<br /> <br /> &ldquo;The MSOE rod wiper test uses an online particle counting method instead of traditional gravimetric measurement where particles are weighed,&rdquo; explained Chuck White, Business Development Manager for Hallite. &ldquo;The particle count approach provides a more complete and accurate assessment of contaminants than weight because two samples can have the same gravimetric weight in oil, but one may contain many more dirt particles than the other indicating much greater potential for damage to precision components. This new method raises the bar on keeping solid contaminants out of the system now to avoid problems later.&rdquo;</p> <h3> The test procedure</h3> <p>MSOE used the <a href="http://standards.sae.org/j1195_199308/" target="_blank">SAE J1195</a>&nbsp; standard combined with best practices to establish a baseline for developing the rod wiper test procedure. A rig was built in the MSOE test lab and parameters such as duration, cycle rate, pressure and temperature were set using input from hydraulic cylinder manufacturers to best simulate the rigor of actual field conditions. It took eight months of development, verification, trials and adjustments to establish a repeatable test procedure. Once the new procedure was completed and proven, MSOE tested the Hallite 520 and 820 wipers against two seals from other manufacturers.<br /> <br /> The test procedure involved installing the rod wiper into the specified test fixture, heating the hydraulic circulation fluid to150˚F, pumping the oil over the top of the rod and letting it drain down into the reservoir while circulating high-velocity particles (ISO 12103-1-A4 Course Test Dust) of contamination in the chamber. The objective was to count how much dirt and grit got past the wiper. Based on the conditions and method used, data suggests that the Hallite 520 and 820 wipers allowed less than one half the amount of contaminant from entering into the test system compared to competitive wipers that were tested.<br /> <br /> <img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/Hallite-MSOE.png" style="width: 222px; height: 505px; float: left; margin-left: 4px; margin-right: 4px;" title="Shown here is a screen cature from the animated video demonstrating the rod wiper test procedure." />&nbsp;&ldquo;Hallite has a reputation as a trusted brand for wiper technology, but we needed competitive third-party validation for the integrity of our material and design,&rdquo; continued White. &ldquo;We are very excited about the performance results because they demonstrate how our products work in some of the most aggressive field environments. Also, working together with MSOE and key customers to develop and conduct a test of this quality is invaluable as it forged a three-way partnership that emphasizes the importance of rod wipers and gives Hallite an opportunity to demonstrate our continued commitment to understanding and developing technologies to improve the effectiveness of hydraulics systems.<br /> <br /> Finally, by cooperating with one of the leading academic fluid power research laboratories in the nation where students are building and managing the mechanical functions for test fixtures, Hallite is providing real-world interaction to help the next generation of hydraulics engineers learn more about seals and how they interact. This paves the path for innovative future testing methods.&rdquo;<br /> <br /> <strong>About Hallite</strong> &mdash; Hallite is a&nbsp; manufacturer of high-performance hydraulic seals and selaing systems, such as rod wipers, gaskets, rubber and plastics parts for a variety of applications in mining, construction, agriculture, and material handling. Engineered in a wide variety of advanced materials, the full range of products are readily accessible through Hallite&rsquo;s global manufacturing presence and a worldwide network of service partners. Hallite is a member of the Fenner PLC Group of companies. For more information, visit<strong> <a href="http://www.hallite.us" target="_blank">www.hallite.com</a></strong>.<br /> <br /> <strong>About the Fluid Power Institute</strong> &mdash; MSOE&rsquo;s Fluid Power Institute (FPI) has been a pioneer in motion control and fluid power education since its inception in 1962.&nbsp; FPI has active programs in fluid power systems design, electrohydraulics, test and evaluation, fluid development, and contamination control. FPI recently added a new off-campus 12,500ft<sup>2</sup> laboratory facility to support the R&amp;D needs of the fluid power Industry. This high-bay laboratory has drive-in access, reconfigurable workspaces, and multiple power units for realistic endurance testing of fluid power equipment. For more information, visit <strong><a href="http://www.msoe.edu/fpi" target="_blank">www.msoe.edu/fpi</a></strong>.</p> <p>A white paper describing the MSOE test and a graphic animation depicting how it was conducted are available upon request by emailing <em>Lisa Gentile, Marketing Manager at Hallite Seals Americas, at <strong><a href="mailto:lgentile@hallite.us?subject=Inquiry%20about%20article%20on%20H%26P%20website">lgentile@hallite.us</a></strong></em>.</p> <p><em>For additional infomration, contact <strong><a href="mailto:lgentile@hallite.us?subject=Inquiry%20about%20article%20on%20H%26P%20website">Lisa Gentile</a></strong> or Tom Wanke, Director of the Fluid Power Institute at MSOE at <strong><a href="mailto:lgentile@hallite.us?subject=Inquiry%20about%20article%20on%20H%26P%20website">wanke@msoe.edu</a></strong>.</em><br /> &nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/seals/seal-supplier-partners-msoe-new-test-method#comments Seals News Thu, 29 Jan 2015 16:23:00 +0000 30521 at http://hydraulicspneumatics.com 8th Grade Students have Fun with NFPA Fluid Power Challenge http://hydraulicspneumatics.com/blog/8th-grade-students-have-fun-nfpa-fluid-power-challenge <div class="node-body blog-body"><p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/ATSG9X69Lv46_3ZptBjTXwrbAcdxepTap2rhZXtcyYo_0.jpg" target="_blank"><img alt="Below are pictures of students with their apparattuses taken at the UMN challenge. " src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/ATSG9X69Lv46_3ZptBjTXwrbAcdxepTap2rhZXtcyYo_0.jpg" style="width: 250px; height: 188px; margin: 0px 4px; float: right;" title="Click on image for larger view." /></a>Adolescents got excited about engineering and technology at the National Fluid Power Association (NFPA) Fluid Power Challenge this week. The Center for Compact and Efficient Fluid Power (CCEFP) at the University of Minnesota (UMN) and Georgia Institute of Technology hosted a competition on January 26<sup>th</sup> and 27<sup>th</sup>, preceded by a workshop hosted in December, 2014. The workshop educated middle-schoolers in hydraulics and pneumatics, hinge joints and levers, and gave them hands-on experience to build functioning machines. The students invented their own unique techniques for picking up objects and were given time in the classroom to prepare for the challenge.</p> <p>About forty groups of four 8<sup>th</sup> graders competed in the challenge to build fluid powered apparatuses capable of picking up objects an advancing them upward in a series of staggered platforms. Award winners are&nbsp;&nbsp;in the group photo. John Metcalf Jr. High School 4, FPC Team 20 won the portfolio award; John Metcalf Jr. High School 2, FPC Team 02 won the teamwork award; &nbsp;Ashby Public Schools, FPC Team 09 won the award for the best design; and North Branch 3, FPC Team 18 were the overall champions&nbsp; for the competition.&nbsp;</p> <p>Below are pictures of students with their apparatuses taken at the UMN challenge.&nbsp;</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/SchoolCombined.jpg" target="_blank"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/SchoolCombined.jpg" style="width: 300px; height: 133px; margin: 0px 4px; float: left;" title="Click on image for larger view." /></a></p> <p>The NFPA provides the challenge to middle school students to spark timely interest in learning more about engineering, automation, hydraulics, and technology. The challenge should prompt students to choose math and science classes in high school and increase the amount of students that choose an engineering or technological career.</p> <p>UMN acknowledges the event sponsors FORCE America, Eaton Corporation, International Fluid Power Society, National Fluid Power Association and the University of Minnesota&#39;s Mechanical Engineering and College of Science and Engineering.</p> <p>For further information about the challenge, contact Lynn Beyer, Workforce Program Manager, at&nbsp;<a href="mailto:lbeyer@nfpa.com">lbeyer@nfpa.com</a>, call (414) 778-3364; or go to <a href="http://www.nfpafoundation.org/fpchallenge/index.aspx" target="_blank">NFPA Fluid power Challenge</a>.</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/8th-grade-students-have-fun-nfpa-fluid-power-challenge#comments Events Fluid Power Talk Wed, 28 Jan 2015 15:18:00 +0000 30491 at http://hydraulicspneumatics.com <p>Group picture of the NFPA Challenge award winners; awards for best portfolio, teamwork, design, and overall challenge championship were awarded to&nbsp;John Metcalf Jr. High School 4, John Metcalf Jr. High School 2,&nbsp;Ashby Public Schools, and&nbsp;North Branch 3, respectively.</p> How A Small Omission Can Result In A BIG Hydraulics Maintenance Disaster http://hydraulicspneumatics.com/blog/how-small-omission-can-result-big-hydraulics-maintenance-disaster <div class="node-body blog-body"><p>I had a strange dream last night. And at the risk of having you think I live, eat and sleep hydraulics, I&#39;m going to tell you about it. For the record though, I normally dream about much more pleasant things!<br /> <br /> Anyway, I was at a large industrial plant somewhere - don&#39;t ask me where, I don&#39;t know. And the plant had at least two, variable-displacement, bent axis pumps. In the dream, these pumps were actually Rexroth A7V500 units. If that model code doesn&#39;t mean anything to you, don&#39;t worry, it&#39;s not important.<br /> <br /> What is important is these pumps have a flooded housing. This means the inlet port is common to the case. Or to say the same thing another way, the intake hose floods the case, and the pump draws its oil from the case. This arrangement also means a separate case-drain line is not required.<br /> <br /> These pumps were mounted with the shaft up. Which is kinda strange since I&#39;ve never actually seen an installation of this type and size of pump mounted vertically with the shaft up. It&#39;s unusual to say the least.<br /> <br /> To cut a long story short, both pumps had failed and I was representing the company who had rebuilt them - a definite flashback to a past life. The center pin had seized in its socket and one of the piston skirts had broken (<a href="http://www.hydraulicsupermarket.com/track?p=handp&amp;w=phfsp">see pages 7 and 32 of Preventing Hydraulic Failures for how this might look</a>). Suffice to say it was a nasty failure.<br /> <br /> It was crystal clear to me the pumps had failed as a result of inadequate lubrication. Further, this lubrication failure was a result of improper commissioning. In short, the pump housings hadn&#39;t been bled of air and therefore, were not completely full of oil prior to start-up. The worst thing about this from my point of view was, the pumps had been installed by one of our technicians - who should have known better! And so all of a sudden my dream turned into a nightmare.<br /> <br /> Here&#39;s the thing: when you install a pump with a flooded housing, it&#39;s a mistake to believe that because the pump case is common to the inlet, you don&#39;t need to fill the case with oil. Well, you don&#39;t in the same way that you&#39;d normally fill the case of a piston pump through its uppermost case drain port.<br /> <br /> With a flooded housing pump, you do this by opening the intake isolation valve (assuming one is fitted) and then cracking the uppermost plug in the housing to vent the case of air and ensure it is completely full of oil. If you don&#39;t do this, all the air in the intake line and housing simply gets compressed into the case, ensuring a &#39;dry start&#39;. And this is especially true if the unit is mounted vertically with the shaft up.<br /> <br /> So the rest of my dream was about figuring out why an experienced technician didn&#39;t do what he was suppose to, (he should have been given a start-up check list) and me sticking band-aids all over the situation to appease a desperately unhappy customer. No wonder I woke up tired this morning!<br /> <br /> While this dream is instructive on its own, there is a deeper, less obvious message: When you&#39;re dealing with expensive hydraulic hardware - whether it&#39;s yours or someone elses - you can never afford to take your eye off the ball. Doing so 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-small-omission-can-result-big-hydraulics-maintenance-disaster#comments Hydraulics At Work Tue, 27 Jan 2015 00:41:00 +0000 30481 at http://hydraulicspneumatics.com Hydraulic Drives on the Move http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-drives-move <div class="field-deck"> Proven in heavy-vehicle applications, where they have reduced fuel consumption and saved on brakes, hydraulic hybrid drives may find their way into smaller vehicles. </div> <div class="node-body article-body"><p>The Ford Escape , Honda Insight, and Toyota Prius are just a few electric hybrid cars on the market. Although these cars are popular in the consumer market, there are limitations to electric hybrid cars when considering scalability. An alternative to the electric hybrid drive is the hydraulic hybrid drive. Hydraulic systems can store and discharge energy more efficiently than electric batteries. Vehicles that require a lot of power are finding hydraulic hybrid drives to be more efficient.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"> <img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"> <a href="/datasheet/hydraulic-drives-move-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> <h3> First, Some History&hellip;</h3> <p>The U. S. Environmental Protection Agency (EPA) has teamed up with such companies as Eaton, Parker Hannifin, Ford, and Chrysler to expand the hydraulic drive field. Back in 2004, the EPA announced that it developed a clean diesel combustion technology for the Ford Expedition, which incorporated an engine design that is simultaneously clean, efficient, and cost-effective. Now, using this concept in conjunction with a full hydraulic drive, this engine is projected to improve the fuel economy of this vehicle by 85% (percentage is higher for city driving).</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/Diagram_1_HHV_Fig.gif" style="width: 595px; height: 443px;" /></p> <p>The RunWise, an advanced series hydraulic hybrid drive system developed in 2005 by <a href="http://www.parker.com/portal/site/PARKER/menuitem.b90576e27a4d71ae1bfcc510237ad1ca/?vgnextoid=c38888b5bd16e010VgnVCM1000000308a8c0RCRD&amp;vgnextfmt=default" target="_blank">Parker Hannifin</a>, has also shown significant results. Angelo Caponi, of Parker&rsquo;s Hybrid Drive Systems Div., says the company launched 11 pre-production vehicles in three municipalities in South Florida in 2010. Over the past few years, the RunWise business has continued to grow, with more than 30 municipalities and private refuse haulers using the technology. (For more on this, see &quot;<a href="http://hydraulicspneumatics.com/waste-management/ohio-town-welcomes-first-hydraulic-hybrid-garbage-trucks" target="_blank">Ohio Town Welcomes First Hydraulic Hybrid Garbage Trucks</a>.&quot;)</p> <p>More than 100 trucks in service employ the RunWise technology, reducing fuel consumption by up to 50%. In addition to the refuse vehicle market, the Parker&rsquo;s Hybrid Drive Systems Div. has expanded into the parcel delivery market, with 48 trucks in use by UPS and Federal Express. The company expects growth to continue as it expands into the broader delivery and urban transportation market.</p> <p>Hydraulic hybrids are also conserving energy in forklift trucks. <a href="http://www.eaton.com/Eaton/ProductsServices/Hydraulics/index.htm" target="_blank">Eaton Hydraulics</a> has developed a hydraulic hybrid lift truck that demonstrated up to 35% fuel savings when compared to a baseline vehicle. This system also starts the vehicle&rsquo;s engine, replacing the function of traditional electric starters. These innovations add up to lower maintenance costs.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/cleanLT.jpg" style="width: 595px; height: 335px;" title="Eaton Hydraulics recently demonstrated the benefits of incorporating hydraulic hybrid drives in forklift trucks." /></p> <p><a href="http://www.chrysler.com/en/?sid=913821&amp;KWNM=chrysler+group+llc&amp;KWID=5865667404&amp;TR=1&amp;channel=paidsearch" target="_blank">Chrysler Group LLC</a> and the EPA announced a partnership in January 2011 to determine the possibility of adapting a hydraulic hybrid system for large passenger cars and light trucks. Working together, both parties hope to reduce the size and complexity of the hybrid system. The research project will focus on adapting the hydraulic hybrid system to a Chrysler Town &amp; Country minivan.</p> <h3> Shrinking and Simplifying</h3> <p>Advances for hydraulic hybrids are focused on expanding this technology for smaller vehicles. For Parker&rsquo;s RunWise system, Caponi said growth is expected in medium-duty applications, such as city transit buses, smaller parcel vehicles, and food delivery vehicles. The medium-duty vehicle market is a customer base that has yet to be fully tapped, and new hydraulic transmission technology will help these vehicles achieve the fuel and cost savings desired for the urban customer.</p> <div class="related-content"> <div class="related-label"> Related</div> <p><a href="http://hydraulicspneumatics.com/waste-management/ohio-town-welcomes-first-hydraulic-hybrid-garbage-trucks">Ohio Town Welcomes First Hydraulic Hybrid Garbage Trucks</a></p> <p><a href=" http://hydraulicspneumatics.com/rail-truck-bus/ameripride-takes-delivery-first-hydraulic-hybrid-truck">Ameripride Takes Delivery of First Hydraulic Hybrid Truck</a></p> <p><a href=" http:/hydraulicspneumatics.com/blog/hydraulic-hybrid-bus-introduced-receives-kudos">Hydraulic hybrid bus introduced, receives kudos</a></p> </div> <p>Parker has a new medium-duty hydraulic transmission using the same proven, cost-saving technology as the RunWise advanced series hydraulic hybrid drive system, but in a smaller, lighter package. Both the transmission and system capture more than 71% of a vehicle&rsquo;s otherwise lost braking energy to increase brake durability up to eight times longer than conventional trucks.</p> <p>Chrysler is trying to use this technology in its non-commercial vehicles, such as the previously mentioned Chrysler Town &amp; Country. The EPA has also modified Ford&rsquo;s F-550 pickup and an Expedition SUV with similar systems.</p> <h3> Keys to Success</h3> <p>Modularization, packaging, and scalability are key components to <a href="http://lightninghybrids.com/" target="_blank">Lightning Hybrids&rsquo;</a> system, which is now available on more than 25 platforms around the world, supporting new and retrofit trucks and buses. By using many standard hydraulic components, Lightning says installation could be done in one day. Tim Reeser, president and co-founder of the company, said an increase in volume has reduced its cost by half over the last six months and he expects another decrease of 20% in the next nine months. As these costs are driven lower, Lightning Hybrids expects to continue expanding its platform offerings with new refuse truck applications for Asia and rear-engine bus applications for Europe and the U.S.</p> <p>Size and complexity are a challenge, but not the only concerns. Other issues arise when considering the high pressures at which these systems operate. The Chrysler Town &amp; Country&rsquo;s system produces power with engine power driving a hydraulic pump that charges a high-pressure accumulator up to 5,000 psi. Trying to flex high-pressure hoses and/or fittings can create stress concentrations and increase potential leaks. This can be a concern when using the chassis of a small-class vehicle. However, with hydraulic systems providing up to 10 times the power in the same size and space as a hybrid electric system, expanding this technology shows distinct advantages.</p> <table border="0" cellpadding="0" cellspacing="0" width="570"> <tbody> <tr> <td width="41"> <img src="http://insidepenton.com/electronic_design/adobe-pdf-logo-tiny.png" /></td> <td style="padding-left: 0px;" width="459"> <a href="/datasheet/hydraulic-drives-move-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 recently published report noted that, while hydraulic hybrids are well suited for heavy-duty vehicles, the lower production runs and generic chassis packages in these vehicles may put such a system at an economic disadvantage. The report further notes that designs for multiple chassis and/or trucks are important to improve the scalability and economy of the system.</p> <p>Although hybrid drives serving the refuse market have been challenged by a niche buyer set, historical underperformance, and strained budgets at the municipal level, this market still presents a significant opportunity for companies like Parker Hannifin Lightning Hybrids.</p> <p>Preconceived thoughts on hydraulic hybrids are proving difficult to break. In the past, the first generation of electric and hydraulic hybrids failed to deliver on emissions and efficiency (primarily due to battery limitations, battery costs, and low-tech hydraulics). Lightning Hybrids said it will have to educate fleet operators and perform long pilot tests to prove that their systems indeed deliver on efficiency and emissions.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/hydraulic-drives-move#comments Hydraulic Pumps & Motors Rail, Truck & Bus Mon, 26 Jan 2015 21:36:00 +0000 30461 at http://hydraulicspneumatics.com Welcome to three new staff members http://hydraulicspneumatics.com/blog/welcome-three-new-staff-members <div class="node-body blog-body"><p>We&#39;re starting off the new year on the right foot by adding three editors to our group &mdash; and all come from technical backgrounds.</p> <p>Here they are, in no particular order:</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/Gonzalez.png" style="width: 200px; height: 231px; float: left; margin-left: 4px; margin-right: 4px;" />Carlos M. Gonzalez joined Penton Media Group in 2015. He achieved a B.S. mechanical engineering at Manhattan College and a M.S. in mechanical engineering at Columbia University. Prior to working for Penton Media, Carlos worked at Sikorsky Aircraft in their Hydraulics and Mechanical Flight Controls department; working on their S76D commercial and the Navy&rsquo;s CH-53K aircraft programs.<br /> Contact him at <a href="mailto:carlos.gonzalez@penton.com">carlos.gonzalez@penton.com</a>.</p> <div class="node-body author-body"> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/Kerns.png" style="width: 200px; height: 231px; float: right; margin-left: 4px; margin-right: 4px;" />Studying mechanical engineering at Rochester Institute of Technology (RIT), he worked in the Polymer Research Lab. Utilizing RIT&rsquo;s co-op program Jeff worked for two aerospace companies focusing on drafting, quality, and manufacturing for aerospace fasteners and metallurgy. He also studied abroad living in Dubrovnik, Croatia. After college, he became a commissioning engineer, traveling the world working on precision rotary equipment. Then he attended a few masters courses at the local college, and helped an automation company build equipment.</p> <p>Growing up in Lancaster County, PA he always liked to tinker, build, and invent. He is ecstatic to be at Hydraulics &amp; Pneumatics Magazine in New York City and looks forward to producing valuable information in the mechanical industry.<br /> Contact him at <a href="mailto:leah.scully@penton.com">jeff.kerns@penton.com</a>.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/LeahScully2.jpg" target="_blank"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/LeahScully2.jpg" style="width: 200px; height: 250px; float: left; margin-left: 4px; margin-right: 4px;" /></a>Leah Scully is a graduate of The College of New Jersey. She has a BS degree in Biomedical Engineering with a mechanical specialization. She studied abroad in Spain and is an advocate for engineering students to study abroad during college. She enjoys learning languages, playing piano, and being outdoors. While in school, Leah assisted teaching SolidWorks classes and substituted for a high school engineering course. She is eager to broaden and apply her knowledge in engineering as an editor. Contact her at <a href="mailto:leah.scully@penton.com">leah.scully@penton.com</a>.</p> </div> <p>&nbsp;</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/welcome-three-new-staff-members#comments News Fluid Power Talk Mon, 26 Jan 2015 18:43:00 +0000 30451 at http://hydraulicspneumatics.com Maintenance-Free Vacuum Cartridges Help Eliminate Clogs http://hydraulicspneumatics.com/vacuum-technology/maintenance-free-vacuum-cartridges-help-eliminate-clogs <div class="field-byline"> Staff </div> <div class="node-body article-body"><p>RTM series of maintenance-free venturi cartridges replace multi-stage pumps allowing dirt, dust, and debris to pass through the pump without clogging. The series is available as complete-pump assembly or only the threaded cartridge. Manufactured in 11 different performance levels up to 3.2 scfm vacuum flow and 28-in. Hg vacuum level. Options include top- or face-mounted extrusion mounting kits, vacuum gauges, switches, and sensors.</p> <p><a href="http://www.vaccon.com" target="_blank">Vaccon</a>, (508) 359-7200</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/vacuum-technology/maintenance-free-vacuum-cartridges-help-eliminate-clogs#comments Products Vacuum Technology Fri, 23 Jan 2015 19:56:00 +0000 30441 at http://hydraulicspneumatics.com Linear Position Sensors Target Port-Mounted Applications http://hydraulicspneumatics.com/controls-instrumentation/linear-position-sensors-target-port-mounted-applications <div class="field-byline"> Staff </div> <div class="node-body article-body"><p>MR series of linear position sensors are intended as a replacement for magnetostrictive sensors, specifically targeting port-mounted applications. This series features ranges from 4 to 36 in.; operates to 5,000 psi or 10,000 ft. in depth; has operating temperatures of 85&deg;C for standard products and 105&deg;C for custom. MR series also features DC voltage or analog output and SenSet Field Adjustable Scaling.</p> <p><a href="http://www.alliancesensors.com" target="_blank">Alliance Sensors Group.</a>, (856) 727-0250</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/controls-instrumentation/linear-position-sensors-target-port-mounted-applications#comments Products Controls & Instrumentation Fri, 23 Jan 2015 19:52:00 +0000 30431 at http://hydraulicspneumatics.com Multipurpose Grippers Designed for Automation Processes http://hydraulicspneumatics.com/vacuum-technology/multipurpose-grippers-designed-automation-processes <div class="field-byline"> Staff </div> <div class="node-body article-body"><p>Parallel and angular grippers are designed for a range of automation processes. A magnetic piston for position sensing is included on all models. Parallel grippers are available in single and double acting with seven bore sizes and two finger types, with a range of gripping force output to 144 lb<sub>f</sub>. The angular grippers are available in double and single acting with six bore sizes, and have a range of torque output to 65 lb-in.</p> <p><a href="http://www.bimba.com" target="_blank">Bimba Mfg.</a>, (708) 534-8544</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/vacuum-technology/multipurpose-grippers-designed-automation-processes#comments Products Vacuum Technology Fri, 23 Jan 2015 19:38:00 +0000 30421 at http://hydraulicspneumatics.com Clean Valve Terminal Uses Redundant Seal System http://hydraulicspneumatics.com/hydraulic-valves/clean-valve-terminal-uses-redundant-seal-system <div class="field-byline"> Staff </div> <div class="node-body article-body"><p>MPA-C clean-design valve terminal uses a redundant seal system that allows problem-free cleaning with high-pressure jets or foam. The valve terminal is made with FDA-compliant materials and lubricated with NSF-H1 food-grade lubricant. MPA-C terminals permit individualized valve configurations. It features electrical interfaces multi-pin, fieldbus, or Ethernet connectivity. Ranges from 1 to 32 pressure zones. Multiple valve options are available.</p> <p><a href="http://www.festo.com/us" target="_blank">Festo Corp.</a>, (800) 993-3786</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-valves/clean-valve-terminal-uses-redundant-seal-system#comments Products Hydraulic Valves Fri, 23 Jan 2015 18:08:00 +0000 30411 at http://hydraulicspneumatics.com Hydraulic Cylinder Testing Unit Records Pressures to 3000 psi http://hydraulicspneumatics.com/cylinders-actuators/hydraulic-cylinder-testing-unit-records-pressures-3000-psi <div class="field-byline"> Staff </div> <div class="node-body article-body"><p>HCT-3000 hydraulic cylinder tester assures repaired cylinders are free of rod or piston seal leaks and that they will function properly when reinstalled. It records pressures to 3000 psi (207 bar). Plumbing is easy with female quick connects for hose termination, while male quick disconnect nipples are provided that terminate in female &frac34;-in. SAE and &frac34;-in. pipe threads. It includes up to a 60-gal reservoir and 21 gpm remote-controlled, pressure-compensated pump.</p> <p><a href="http://www.tuxco.com" target="_blank">Tuxco Corp.</a>, (800) 613-6979</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/cylinders-actuators/hydraulic-cylinder-testing-unit-records-pressures-3000-psi#comments Products Cylinders & Actuators Fri, 23 Jan 2015 18:04:00 +0000 30401 at http://hydraulicspneumatics.com Needle Valves Allow for 360° Positioning http://hydraulicspneumatics.com/hydraulic-valves/needle-valves-allow-360-positioning <div class="field-byline"> Staff </div> <div class="node-body article-body"><p>Series GNV needle valves control the rate of flow in a pneumatic system with bidirectional flow control.&nbsp; Its rotating input allows for 360&deg; positioning. It has multiple mounting options such as direct, in-line, and cartridge styles. Adjustment is by recessed slot or knurled knob. The series is available in 1/8-, &frac14;- and 3/8-in. port sizes with flow rates to 60 scfm at 100 psig.</p> <p><a href="http://www.clippard.com" target="_blank">Clippard Instrument Laboratory Inc.</a>, (877) 245-6247</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-valves/needle-valves-allow-360-positioning#comments Products Hydraulic Valves Fri, 23 Jan 2015 17:52:00 +0000 30391 at http://hydraulicspneumatics.com Vane-Type Hydraulic Motors Ideal for High-Pressure Applications http://hydraulicspneumatics.com/hydraulic-pumps-motors/vane-type-hydraulic-motors-ideal-high-pressure-applications <div class="field-byline"> Staff </div> <div class="node-body article-body"><p>Series M motors come in four sizes, with standard or heavy-duty bearings for high-speed (to 4,000 rpm), high-pressure applications. The dual-alternative pressure plate provides overall efficiency of at least 86% and also allows reversing direction of oil flow. Inlet and outlet ports can be pressurized simultaneously without sacrificing service life or operating smoothness. Torque ratings range from 42 to 300 lb-in./100 psi.</p> <p><a href="http://www.FluiDyneFP.com" target="_blank">Fluidyne Fluid Power</a>, (586) 296-7200</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/vane-type-hydraulic-motors-ideal-high-pressure-applications#comments Products Hydraulic Pumps & Motors Fri, 23 Jan 2015 17:49:00 +0000 30381 at http://hydraulicspneumatics.com Drop-In Replacement Air Cylinders Are Field-Repairable http://hydraulicspneumatics.com/cylinders-actuators/drop-replacement-air-cylinders-are-field-repairable <div class="field-byline"> Staff </div> <div class="node-body article-body"><p>Optimax Series OCG round-body pneumatic actuators provide an alternative to the company&rsquo;s standard &ldquo;built-to-order&rdquo; product line. The cylinders are field-repairable and come in six standard bores from 3/4 to 21/2 in. and 10 standard strokes from 1 to 12 in. Standard features include cushions to reduce end-of-travel impact and magnets for switch-sensing capability. The cylinders are lubricated for life for pressures to 140 psi and offer 2- to 20-in./sec speed range.</p> <p><a href="http://www.phd.com" target="_blank">PHD Inc.</a>, (800) 624-8511</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/cylinders-actuators/drop-replacement-air-cylinders-are-field-repairable#comments Products Cylinders & Actuators Fri, 23 Jan 2015 17:42:00 +0000 30371 at http://hydraulicspneumatics.com All-Stainless Air Cylinders Are Ideal for Washdown Applications http://hydraulicspneumatics.com/cylinders-actuators/all-stainless-air-cylinders-are-ideal-washdown-applications <div class="node-body article-body"><p>Applications in food processing plants can really be tough on machine components &mdash; especially air cylinders. That&#39;s because government agencies require frequent washdown of equipment that comes in direct or incidental contact with food products. These regulations are enacted not only to protect our food supply, but also to protect workers at the food processing plants.</p> <p>Because bacteria can be found in almost any food-handling scenario, OSHA standard 1910.141(h) specifies that, &ldquo;In all places of employment where all or part of the food service is provided, the food dispensed shall be wholesome, free from spoilage, and shall be processed, prepared, handled and stored in such a manner as to be protected against contamination.&rdquo; To comply with this and other OSHA and FDA standards, the food industry &mdash; from production to processing &mdash; relies on chemical washdown processes to eliminate bacteria.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/Chicken processing-R.jpg" target="_blank"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/Chicken%20processing-R.jpg" style="width: 333px; height: 180px; float: left; margin-left: 4px; margin-right: 4px;" /></a>Chemicals used in washdown processes typically are corrosive or caustic, characteristics that damage metals. According to Dana Johnson, of <a href="http://www.birkocorp.com/" target="_blank">Birko Corp.</a>, a specialty chemical company, &quot;General-purpose cleaners, foaming acids, and self-foaming chlorinated caustic cleaners and sanitizers such, as chlorine, are the most common chemicals used in washdowns.&rdquo; Another compound used solution is sodium hydroxide, which can be a strong caustic.</p> <p>&ldquo;Stainless steels have a proven record of being inert and are easily cleaned and sanitized, explained James D. Fritz, PhD, of <a href="http://www.tmrstainless.com/" target="_blank">TMR Stainless</a>, a service provider to the stainless steel industry. &quot;These properties, combined with the ease of fabrication, make stainless steels well suited for food processing applications. Typically, other materials &mdash; such as aluminum, copper alloys and coated carbon steels &mdash; do not have the same resistance for food processing and cleaning environments.&rdquo; Furthermore, at temperatures below 95&deg; C (203&deg; F), SAE types 304 and 316 stainless steel are resistant to highly concentrated sodium hydroxide.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/All SS Cylinders LR.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/All%20SS%20Cylinders%20LR.jpg" style="width: 300px; height: 209px; float: right; margin-left: 4px; margin-right: 4px;" title="Clippard's new line of all-stainless-steel cylinders resist corrosion and are designed and manufactured for high performance and long life. Click on image for larger view." /></a>In response these challenges, Clippard Instrument Laboratory, Cincinnati, recently introduced a line of stainless steel cylinders intended for use in a broad range of applications, including those in washdown and caustic environments. The quality cylinders are constructed of SAE 303 and 304 stainless steel and are available in bores from &frac34; to 2 in., with standard strokes from 1 to 32 in. on some models. They include a Nitrile rod wiper to keep potential contaminants from penetrating inside the cylinder.</p> <p>&bull; Maximum pressure rating of 250 psig<br /> &bull; Nitrile U-cup piston seals for full-power, low-friction and long-life operation<br /> &bull; Nitrile U-cup rod seals for leak-proof operation<br /> &bull; SAE 303 stainless steel end caps<br /> &bull; FDA Compliant Rulon rod bushing<br /> &bull; FDA Compliant Rulon clevis bushing on all universal mount cylinders<br /> &bull; Dimensionally interchangeable with other common brands of round-body cylinders<br /> &bull; FDA-compliant grease lubrication and wipers standard<br /> &bull; Temperature range from -20 to 230&deg; F (-29 to 110&deg; C)<br /> &bull; Cylinders have SAE 304 stainless steel tubes with polished bore low breakaway friction<br /> &bull; Precision-rolled construction for a solid, leakproof cylinder<br /> &bull; Rods are threaded, bonded, and orbit-formed to pistons<br /> &bull; Ground, polished and roller burnished SAE 303 stainless steel rods exhibit a smooth finish that prolongs rod seal life<br /> &bull; Full piston area breakaway to ensure full power from the beginning of each stroke<br /> &bull; All stainless steel air volume tanks (accumulators) available</p> <p><em><strong><a href="http://www.clippard.com/link/hp1567556" target="_blank">Click here</a></strong> for details on Clippard&#39;s new stainless steel cylinders. For information on any of Clippard&rsquo;s other products or services, call (513) 521-4261, or visit <strong><a href="http://www.clippard.com" target="_blank">www.clippard.com</a></strong>.</em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/cylinders-actuators/all-stainless-air-cylinders-are-ideal-washdown-applications#comments Food & Beverage Cylinders & Actuators Thu, 22 Jan 2015 22:25:00 +0000 30341 at http://hydraulicspneumatics.com Parker Hannifin Announces New Leadership http://hydraulicspneumatics.com/news/parker-hannifin-announces-new-leadership <div class="node-body article-body"><p>Parker Hannifin Corp., Cleveland, recently announced that Thomas L. Williams will become its Chief Executive Officer and Lee C. Banks will become President and Chief Operating Officer effective February 1, 2015. Donald E. Washkewicz, who served as Chief Executive Officer since 2001, Chairman of the Board since 2004, and President since 2006, will continue as Chairman of Parker&#39;s Board of Directors. Williams and Banks have also been elected as members of the board, effective immediately.<br /> the Board of Directors.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/DEWashkewicz.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/DEWashkewicz.jpg" style="width: 200px; height: 250px; margin-left: 4px; margin-right: 4px; float: right;" title="Washkewicz" /></a>&quot;Over the past decade, both Tom and Lee have been exposed to the entire global organization, including broad executive leadership preparation and strategy development,&quot; said Washkewicz.&nbsp; &quot;They each bring significant experience with all of Parker&#39;s operating groups and have led the growth and development of Parker&#39;s position in emerging markets. &nbsp;They are supported by a strong management team, all with the common goal of driving outstanding results across Parker&#39;s businesses.&quot;</p> <p>As an Operating Officer of the company since 2006, Williams has had leadership responsibility for the Aerospace, Filtration, Engineered Materials, Instrumentation, Climate and Industrial Controls, Hydraulics, Fluid Connectors, and Automation product groups and the Asia Pacific and Latin America regional groups. He also currently oversees the company&#39;s strategic pricing initiatives.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/TLWilliams.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/TLWilliams.jpg" style="width: 200px; height: 250px; float: left; margin-left: 4px; margin-right: 4px;" title="Williams" /></a>Williams joined Parker in 2003 as Vice President, Operations, for the Hydraulics Group, and in 2005 became President of the Instrumentation Group.&nbsp; Previously, he held key management positions in four different business groups during a 22-year career at General Electric. He serves on the Board of Directors for Chart Industries, an independent global manufacturer of highly engineered equipment.</p> <p>Williams earned a Bachelor of Science degree in Mechanical Engineering from Bucknell University and a Master of Business Administration from Xavier University. &quot;I am honored and excited to accept this new role as Chief Executive Officer of Parker and will focus on continuing to build on its strong foundation, momentum, customer focus and innovative mindset,&quot; he said.</p> <p>As an Operating Officer of the company since 2006, Banks has had leadership responsibility for the Filtration, Engineered Materials, Instrumentation, Climate and Industrial Controls, Hydraulics, Fluid Connectors and Automation product groups and the Europe, Middle East and Africa, and Latin America regional groups. Previously, he was the President of Parker&#39;s Hydraulics and&nbsp;Instrumentation product groups and was&nbsp;Vice President of Operations in the Climate and Industrial Controls Group.&nbsp;</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/LCBanks.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/LCBanks.jpg" style="width: 200px; height: 250px; float: right; margin-left: 4px; margin-right: 4px;" title="Banks" /></a>Banks began his career with Parker in 1991 and has also held increasingly responsible positions within sales and operations management including several division general manager positions.&nbsp; He serves on the Board of Directors of Nordson Corporation, a provider of precision dispensing equipment for industrial coatings.</p> <p>Banks has a Bachelor of Arts degree in Economics from DePauw University and a Master of Business Administration from The Keller Graduate School of Management in Chicago. &quot;I look forward to leading Parker&#39;s global operations,&quot; said Banks.</p> <p>Parker Hannifin achieved annual sales exceeding $13 billion in fiscal year 2014. A manufacturer of motion and control technologies and systems, Parker provides engineered solutions for a wide variety of mobile, industrial, and aerospace markets. The company employs approximately 57,500 people in 50 countries.</p> <p>For more information, visit the company&#39;s website at <a href="http://www.parker.com/" target="_blank">www.parker.com</a>.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/parker-hannifin-announces-new-leadership#comments News Thu, 22 Jan 2015 21:17:00 +0000 30331 at http://hydraulicspneumatics.com A True Steam Shovel http://hydraulicspneumatics.com/blog/true-steam-shovel <div class="node-body blog-body"><p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/MJHS excavation.jpg" target="_blank"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/MJHS%20excavation.jpg" style="width: 300px; height: 197px; margin-left: 4px; margin-right: 4px; float: right;" title="Photo from about 1921 shows steam shovel —&nbsp;the forerunner of today's power shovles and excavators — at work in Wiolloughby, Ohio during the early construction of a junior high school. Click on image for larger view." /></a>I&#39;m a member of our local historical society, and I often look through old pictures and negatives when I visit. Last night I came a cross this picture of a steam shovel excavating for a junior high school, which was dedicated in 1922. So this image was probably taken in 1921.<br /> Before hydraulics, this equipment depended on chains, spockets, steel cables, and pulleys to do work. Even though they could work circles around manual and animal labor, these machines were slow, had limited motion, and couldn&#39;t handle very big payloads.</p> <p>But diesel engines, hydraulics, and electronic controls have changed all that. Today&#39;s machines are much faster, more powerful, ergonomic, and much more controllable. Still, you may sometimes hear people refer to these machines as steam shovels, even though steam hasn&#39;t been in wide use since early in the last century.</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/true-steam-shovel#comments Construction The Hitch Post Wed, 21 Jan 2015 23:43:00 +0000 30321 at http://hydraulicspneumatics.com System Simplifies Hydraulic Tank Cleaning http://hydraulicspneumatics.com/hydraulic-pumps-motors/system-simplifies-hydraulic-tank-cleaning <div class="field-deck"> The versatility of the Super Caddy 3 makes it useful for any shop or large fleet operation. </div> <div class="node-body article-body"><p><strong>Super Caddy 3</strong> is a service tool that gives dealers and service center the ability to clean a hydraulic system efficiently and with confidence. It supports oil cleanup activities both in the shop and on-site from a service truck. The versatility of the Super Caddy 3 makes it useful for any shop or large fleet operation. It can be used to clean systems, transfer fluids, and certify fluids to a certain cleanliness level. On-board sensors provide particle count and percentage of water saturation while the Super Caddy 3 quickly removes contaminants from oil.</p> <p>The Super Caddy 3 is a complete redesign of the previous Super Caddy model. New features include: reduced size and weight, improved filtration efficiency and dirt holding capacity, lower cost replacement filters, updated particle counter that can be recalibrated if needed, a new water content sensor, single lifting point, and the ability to operate at 120V or 240V with the flip of a switch.</p> <p>For more information, visit <a href="http://bit.ly/HP1412-DeereSC3" target="_blank">bit.ly/HP1412-DeereSC3</a> or go to <a href="http://bit.ly/HP1412-SuperCaddy3" target="_blank">bit.ly/HP1412-SuperCaddy3</a> to watch a video describing operation and capabilities of the Super Caddy 3.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-pumps-motors/system-simplifies-hydraulic-tank-cleaning#comments Hydraulic Pumps & Motors Wed, 21 Jan 2015 18:19:00 +0000 30311 at http://hydraulicspneumatics.com Smart Hydraulic Hose Protects Golf Greens http://hydraulicspneumatics.com/hose-tubing/smart-hydraulic-hose-protects-golf-greens <div class="field-deck"> Golf courses have zero tolerance for hydraulic leaks, so keeping close tabs on the condition of hydraulic hose makes a lot of sense. </div> <div class="node-body article-body"><p>Golf courses use a wide variety of mobile equipment for maintaining fairways, greens, and other areas. So if equipment failure causes oil to leak onto public areas, costs to clean up and repair the affected area can be substantial. Plus, well-known country clubs, such as The Greenbrier, White Sulphur Springs, W. Va., have an impeccable reputation to maintain, which makes leakage prevention even more important.</p> <p>Naturally, regular inspection of hose would be a regular part of the operating routing for this mowers, rollers, and other hydraulically powered equipment. The Greenbrier has four golf courses, and thousands of acres of immaculately groomed landscape, so all the equipment involved in caring for all this real estate holds significant potential for leaks if its not carefully maintained.</p> <p><strong>The Challenge</strong></p> <p>Staff at Greenbier uses mowers and rollers to maintain its immaculate greens early in the morning while it is still dark and the bent grass turf is covered in dew. The low-light conditions of the early morning make it difficult for equipment operators to notice if a hydraulic hose failure occurs, leaving the course open to potential damage of its most prized real estate.</p> <p>The equipment contains multiple hydraulic hoses in hard-to-see places. Yet, if one of the hoses fails unexpectedly during a course&rsquo;s turf care routine and goes unnoticed, it can disrupt the operation and create significant costs&mdash;in terms of both dollars and reputation.</p> <p>The resulting fluid spill can cause extensive turf damage, including the possibility of a course having to replace a green and close for repair&mdash;a costly consequence. To avoid unexpected hose failure, many superintendents frequently replace hydraulic hoses on equipment before it is necessary.</p> <p>As part of The Greenbrier&rsquo;s preventive maintenance program, staff conducted a comprehensive monthly review of its turf care equipment, which included hydraulic hose inspection. They visually checked individual hoses for signs of failure. When they identified a potential problem with a hose, it was replaced. Even with this regimen, staff at The Greenbrier was not completely satisfied it was catching every problematic hose, so it looked to <a href="http://www.eaton.com/hydraulics" target="_blank">Eaton Hydraulics</a>, Eden Prairie, Minn., for a solution.</p> <p><strong>Taking Action</strong></p> <p>Eaton recommended its LifeSense hydraulic hose condition monitoring system for the resort&rsquo;s greens rollers. The LifeSense system monitors hydraulic hose conditions and detects failure-related events to provide advance notification that a hose is approaching the end of its useful life.</p> <p>During the early winter of 2013, The Greenbrier staff replaced about six &frac12;-in. hoses on three greens rollers with LifeSense hose. Deciding which hoses would be replaced was based on hydraulic pressure, amount of motion, potential abrasion, and similar factors. Also, because it is difficult to detect wear of hose installed in inaccessible areas, location of each hose assembly within the machine was also considered.</p> <p>Each hose contains a sensor that continuously monitors hose conditions and generates a electrical signals. These signals then transmit to a diagnostic unit that interprets the feedback. If the system identifies a hose that has been compromised, an alert is generated to warn personnel.</p> <p>&ldquo;This is one of those solutions that you hope you never have to use, much like an insurance policy,&rdquo; said Kelly Shumate, director of golf course maintenance at The Greenbrier. &ldquo;LifeSense provides a total sense of security that even with our strict and regular maintenance on the rollers, if we miss something, it will alert us before we have a big problem on our hands.&rdquo;</p> <p><strong>Results</strong></p> <p>The Greenbrier&rsquo;s course managers have been quite satisfied with Eaton&rsquo;s LifeSense system, which reinforces its sound maintenance practices and gives them enhanced confidence that greens will remain pristine just as its players have come to expect. In fact, during testing, the LifeSense system signaled a problem with one of the hoses after three months. Sure enough, an inspection revealed that the hose has suffered from premature abrasive wear. When the new hose assembly was installed, it was rerouted to prevent future abrasive wear.</p> <p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/Lead%20insetWEB.jpg" style="width: 350px; height: 246px; float: left; margin: 5px;" title="The Greenbrier uses Eaton’s LifeSense hydraulic hose on greens rollers to continuously monitor the condition of hose electronically. " />The Greenbrier chose to use Eaton&rsquo;s hard-wired LifeSense system. Eaton also offers a wireless version, which can even send alerts to smart phones. The simple hard-wired system has as red light that blinks if a hose sensor connector becomes loose, and the light illuminates constantly if a failure is detected, thereby minimizing false alarms.</p> <p>&ldquo;We are always working to provide innovative solutions that will push the boundaries of what is possible and technology that meets customer needs head on. LifeSense is a game changer for golf course maintenance,&rdquo; said Kelly Moore-Floyd, Eaton product manager. &ldquo;With LifeSense, course superintendents gain peace of mind knowing their hydraulic hoses are constantly monitored, providing assurance that they are taking steps to avoid turf damage and unexpected and expensive repairs.&rdquo;</p> <p>For more information, call Eaton&rsquo;s Hydraulics Group at (952) 937-9800; or visit <a href="http://bit.ly/HP1412-LifeSense" target="_blank">bit.ly/HP1412-LifeSense</a>.</p> <p>&nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hose-tubing/smart-hydraulic-hose-protects-golf-greens#comments Hose & Tubing Wed, 21 Jan 2015 16:09:00 +0000 30301 at http://hydraulicspneumatics.com How Little Leaks Keep Hydraulic Equipment Users Poor http://hydraulicspneumatics.com/blog/how-little-leaks-keep-hydraulic-equipment-users-poor <div class="node-body blog-body"><p>It&#39;s now more important than ever to ensure that every dollar spent on operating and maintaining hydraulic equipment is a dollar well spent. Furthermore, it&#39;s imperative that the hydraulic equipment you design, repair or maintain does not LEAK money.<br /> <br /> Hydraulic systems are often considered perennial consumers of oil and in turn, make-up fluid an inherent cost of operating hydraulic equipment. But to calculate the real cost of one or more &#39;minor&#39; leaks on a hydraulic machine, the expense associated with all of the following must be considered:</p> <ul> <li> &nbsp;&nbsp;&nbsp; Make-up oil.</li> <li> &nbsp;&nbsp;&nbsp; Clean-up.</li> <li> &nbsp;&nbsp;&nbsp; Disposal.</li> <li> &nbsp;&nbsp;&nbsp; Contaminant ingression.</li> <li> &nbsp;&nbsp;&nbsp; Safety.</li> </ul> <p><strong>Make-Up Oil</strong><br /> <br /> The cost of make-up oil should be the most obvious cost of hydraulic system leaks. I say &#39;should be&#39; because many hydraulic equipment users fail to consider the accumulative effect on the cost of one or more slow leaks over time.<br /> <br /> Consider a piece of hydraulic equipment losing 0.5cc of oil per minute. That&#39;s 30cc per hour, and 720cc over 24 hours - perhaps not a significant loss. But over a month this equates to 22 liters; and 263 liters over the course of a year. Assuming an oil cost of $3 per liter, the annual cost is around $800.<br /> <br /> <strong>Clean-Up</strong><br /> <br /> Where there are oil leaks there is almost always a clean-up cost to consider. Clean-up costs include:</p> <ul> <li> &nbsp;&nbsp;&nbsp; labor;</li> <li> &nbsp;&nbsp;&nbsp; equipment required to empty sumps and drip trays, and degrease machine surfaces; and</li> <li> &nbsp;&nbsp;&nbsp; consumables such as detergents and absorbent material.</li> </ul> <p>Assuming it costs $20 per week in labor, equipment and consumables to clean up the piece of equipment discussed above, the annual clean-up bill totals more than $1,000.<br /> <br /> <strong>Disposal</strong><br /> <br /> I can remember a time when waste oil companies used to pay for the privilege of emptying waste oil tanks. These days they bill you take it away. Environmentally acceptable disposal of waste oil, and absorbent material containing waste oil, costs money. Assuming transport and disposal cost of $1 per liter, the annual disposal costs attributable to the leakage rate discussed above amounts to $263.<br /> <br /> <strong>Contaminant Ingression</strong><br /> <br /> Where oil leaks out, contaminants such as air, particles and water can get in. Costs to consider here include:</p> <ul> <li> &nbsp;&nbsp;&nbsp; component damage and fluid degradation as a result of contaminant ingress;</li> <li> &nbsp;&nbsp;&nbsp; downtime caused by equipment reliability problems; and</li> <li> &nbsp;&nbsp;&nbsp; removal of ingested contaminants.</li> </ul> <p><strong>Safety</strong><br /> <br /> In many situations, oil leaks can pose a safety hazard. Like the costs associated with contaminant ingression, the costs associated with the hazards posed by oil leaks are difficult to quantify -- short of a lost time accident actually occurring. However, active management of the safety risk posed, through for example, more frequent clean-up than may otherwise be necessary, skews this cost to a quantifiable area.<br /> <br /> <strong>Adding Up The Cost</strong><br /> <br /> The annual cost of the &#39;little leaks&#39; on the hypothetical piece of hydraulic equipment considered above amounts to over $2,000 per year in make-up oil, clean-up and disposal costs alone. As the above example illustrates, if multiple pieces of hydraulic equipment are involved, the accumulative cost over an extended period of time can be significant.<br /> <br /> In other words, tolerating minor hydraulic oil leaks 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-little-leaks-keep-hydraulic-equipment-users-poor#comments Hydraulics At Work Tue, 20 Jan 2015 00:27:00 +0000 30281 at http://hydraulicspneumatics.com Multi-Domain Modeling and Simulation Intended for Fluid Power http://hydraulicspneumatics.com/controls-instrumentation/multi-domain-modeling-and-simulation-intended-fluid-power <div class="node-body article-body"><p><strong><a href="http://www.mscsoftware.com/product/easy5" target="_blank">Easy5 software</a></strong> is a graphics-based tool for modeling, simulation, and design of multi-domain dynamic systems characterized by differential, difference, and algebraic equations. Systems that can be analyzed using Easy5 include hydraulic, pneumatic, mechanical, electrical, thermal, powertrain, vehicle dynamics, digital/analog control systems, and more.</p> <p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/Easy5 01.jpg" target="_blank"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/Easy5%2001.jpg" style="width: 300px; height: 224px; float: left; margin-left: 4px; margin-right: 4px;" title="Typical screen shot of Easy5 being used with hydraulics. Click on image for larger view." /></a>Models are assembled from prebuilt or user-generated components from system-level blocks, such as valves, actuators, heat exchangers, engines, clutches, or from primitive functional blocks, such as summers, dividers, lead-lag filters, and integrators. Schematic-based building blocks are packaged in application libraries. Users can also create custom libraries for reuse and sharing. An open architecture provides an interface to a broad set of software and hardware tools, including Adams, MSC Nastran, and Simulink.</p> <p>Users can perform linear and nonlinear analyses on the same executable model. Nonlinear analysis options include the ability to perform dynamic behavior and steady-state analyses on the system model. The software can also generate a linear approximation of a nonlinear model to provide insight into the stability and performance of the nonlinear system at various operating points. Analysis tools include: transfer function, root locus, Eigen value sensitivity, stability margins, and linear model generation analysis.</p> <p>Available libraries include:</p> <p><strong>General purpose</strong> &mdash; Blocks that are general in nature are used across a broad spectrum of applications. This library is always included with Easy5.</p> <p><strong>Interactive simulation</strong> &mdash; Users can perform a simulation in an interactive mode during which model data can be changed and plots displayed as the simulation progresses. Interactive simulation is useful because you can monitor results and change input parameters while the simulation is running and stop it if the results are undesirable.</p> <p><a href="http://www.youtube.com/embed/DbGTwvyT_Co" target="_blank"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/Easy5.png" style="width: 222px; height: 124px; float: right; margin-left: 4px; margin-right: 4px;" title="Click on the icon to watch an informative video." /></a><strong>Thermal hydraulic</strong> &mdash; This consists of a set of Easy5 components designed to model the transient and steady-state behavior of hydraulic liquid/mechanical systems, including transient thermal energy effects and heat transfer. Sample problems that can be solved include:<br /> &bull; compressible fluid problems like cavitation, water hammer transients<br /> &bull; fluid viscosity degradation, multiple viscosity fluids<br /> &bull; complex valves and actuators.</p> <p><strong>Gas dynamics</strong> &mdash; This library is a collection of components to model compressible gas systems, including pneumatics, environmental control, and gas transmission. Transient forms of the energy and mass conservation equations are modeled, with gas composition allowed to vary throughout a system.</p> <p><strong><a href="http://mscdrupal.mscsoftwarecorpo.netdna-cdn.com/cdn/farfuture/Ic8NqWyYAjMsiNySv_YgXCTk-aEINKYBDzmfM8R9QFM/mtime:1378934564/sites/default/files/ds_easy5_ltr_w_0.pdf" target="_blank">Click here</a></strong> to download a PDF datasheet providing more detail on the capabilities, features, and benefits of Easy5 software.</p> <p><strong><a href="http://www.mscsoftware.com/resources-related-articles/modeling-and-simulation-subsea-hydraulic-actuator-used-subsea-oil-and-gas" target="_blank">Click here</a></strong> to download a PDF file summarizing a technical papger, &quot;Modeling and Simulation of a Subsea Hydraulic Actuator used in Subsea Oil and Gas Extraction.&quot;</p> <p><em>For more information call MSC Software Corp., Newport Beach, Calif., at (714) 540-8900, or visit</em> <em><strong><a href="http://www.mscsoftware.com" target="_blank">www.mscsoftware.com</a></strong>.</em></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/controls-instrumentation/multi-domain-modeling-and-simulation-intended-fluid-power#comments Other Technologies Controls & Instrumentation Fri, 16 Jan 2015 15:15:00 +0000 30161 at http://hydraulicspneumatics.com How-to Guide: Design for Pressure Surge http://hydraulicspneumatics.com/hydraulic-valves/how-guide-design-pressure-surge <div class="field-deck"> Sponsored by Mentor Graphics </div> <div class="node-body article-body"><p>&ldquo;Pressure bursts pipes or it makes diamonds.&rdquo; The phrase has been said in different ways by different people, usually in reference to how someone performs in critical situations. Of course, this phrase has a more direct meaning for engineers. While diamonds are always a very interesting topic, methods for preventing the catastrophes that accompany bursting pipes is something that must be discussed. Understanding and design for &#39;water hammer&#39; or surge is discussed in this complimentary article.<br /> <br /> <script type="text/javascript">(function(n){var r="_ion_ionizer",u="//1f1835935797600af226-51128641de34f0801c2bd5e1e5f0dc25.r5.cf1.rackcdn.com/ionizer-1.0.min.js",t=n.getElementsByTagName("script"),i;t=t[t.length-1],t.id=r+ +new Date+Math.floor(Math.random()*10),t.setAttribute("data-ion-embed",'{"url":"//reg.hydraulicspneumatics.com/HP-WP-Mentor-GdePressureSurge-011415?_ion_target=embed-1.0","target":"'+t.id+'","appendQuery":false}'),n.getElementById(r)||(i=n.createElement("script"),i.id=r,i.src=n.location.protocol==="https:"?u.replace(".r5.",".ssl."):u,t.parentNode.insertBefore(i,t.nextSibling))})(document);</script></p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-valves/how-guide-design-pressure-surge#comments White Papers Hydraulic Valves Wed, 14 Jan 2015 18:56:00 +0000 30141 at http://hydraulicspneumatics.com Accurate Thermo-Fluid Simulation in Real Time Environments http://hydraulicspneumatics.com/hydraulic-fluids/accurate-thermo-fluid-simulation-real-time-environments <div class="field-deck"> Sponsored by Mentor Graphics </div> <div class="node-body article-body"><p>The crux of any task undertaken in System Level Thermo-Fluid Analysis is striking a balance between time and accuracy. This paper describes the &quot;Design of Experiments&quot; approach used to address the issue of providing accurate simulation results in real-time. It will cover:</p> <ul> <li> Meta-models &amp; the design of experiments approach</li> <li> How to Construct and fit a meta-model</li> <li> Generating inputs for the meta-model</li> <li> Evaluating and assessing the meta-model</li> </ul> <br /> <script type="text/javascript">(function(n){var r="_ion_ionizer",u="//1f1835935797600af226-51128641de34f0801c2bd5e1e5f0dc25.r5.cf1.rackcdn.com/ionizer-1.0.min.js",t=n.getElementsByTagName("script"),i;t=t[t.length-1],t.id=r+ +new Date+Math.floor(Math.random()*10),t.setAttribute("data-ion-embed",'{"url":"//penton.postclickmarketing.com/HP-WP-Mentor-ThermoFluidSimulation-011315?_ion_target=embed-1.0","target":"'+t.id+'","appendQuery":false}'),n.getElementById(r)||(i=n.createElement("script"),i.id=r,i.src=n.location.protocol==="https:"?u.replace(".r5.",".ssl."):u,t.parentNode.insertBefore(i,t.nextSibling))})(document);</script></div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-fluids/accurate-thermo-fluid-simulation-real-time-environments#comments White Papers Hydraulic Fluids Tue, 13 Jan 2015 20:03:00 +0000 30111 at http://hydraulicspneumatics.com What is System Level Thermo-Fluid Analysis? http://hydraulicspneumatics.com/hydraulic-fluids/what-system-level-thermo-fluid-analysis <div class="field-deck"> Sponsored by Mentor Graphics </div> <div class="node-body article-body"><p>This paper will explain some of the fundamentals of System Level Thermo-Fluid Analysis and demonstrate why 1D CFD is not an accurate description. It will shed some light on both the philosophy that underpins the system approach and how and why it is used. It will cover:</p> <ul> <li> Building Blocks of System Level Analysis</li> <li> Thermo &amp; Fluid Dynamics</li> <li> Pressure Drop: Paying your Dues</li> <li> Understanding The Fourth Dimension</li> </ul> <br /> <script type="text/javascript">(function(n){var r="_ion_ionizer",u="//1f1835935797600af226-51128641de34f0801c2bd5e1e5f0dc25.r5.cf1.rackcdn.com/ionizer-1.0.min.js",t=n.getElementsByTagName("script"),i;t=t[t.length-1],t.id=r+ +new Date+Math.floor(Math.random()*10),t.setAttribute("data-ion-embed",'{"url":"//reg.hydraulicspneumatics.com/HP-WP-Mentor-ThermoFluidAnalysis-011315?_ion_target=embed-1.0","target":"'+t.id+'","appendQuery":false}'),n.getElementById(r)||(i=n.createElement("script"),i.id=r,i.src=n.location.protocol==="https:"?u.replace(".r5.",".ssl."):u,t.parentNode.insertBefore(i,t.nextSibling))})(document);</script></div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/hydraulic-fluids/what-system-level-thermo-fluid-analysis#comments White Papers Hydraulic Fluids Tue, 13 Jan 2015 18:44:00 +0000 30101 at http://hydraulicspneumatics.com Hydraulic Oil Contamination: How Its 'Cure' Can Be Worse Than The Disease http://hydraulicspneumatics.com/blog/hydraulic-oil-contamination-how-its-cure-can-be-worse-disease <div class="node-body blog-body"><p>Given that removing contaminants from the oil to extend hydraulic component life is the primary objective of filtration, it is a paradox for filters to be located where they reduce the service life of components they were installed to protect.<br /> <br /> So when considering the possible locations for filters in a hydraulic system, the overarching principle should be: first, do no harm. From a filtration perspective the pump intake is an ideal location for filtering media. Filter efficiency is increased by the absence of both high fluid velocity, which can disturb trapped particles, and high pressure-drop across the element, which can force migration of particles through the media. These advantages are outweighed by the restriction the element creates in the intake line and the negative effect this can have on pump life.<br /> <br /> A restriction at the pump inlet can cause cavitation erosion and mechanical damage. And while cavitation erosion contaminates the hydraulic fluid and damages critical surfaces, the mechanical effect of vacuum-induced forces has a more detrimental impact on pump life.<br /> <br /> The creation of a vacuum in the pumping chambers of an axial pump puts the piston-ball and slipper-pad socket in tension. This joint is not designed to withstand excessive tensile force and as a consequence, the slipper becomes detached from the piston. This can occur either instantaneously, if the vacuum-induced tensile force is significant enough, or over many hours of service as the ball joint is repetitively put in tension during inlet.<br /> <br /> The piston retaining plate, the primary function of which is to keep the piston slippers in contact with the swash plate, must resist the forces that act to separate the piston from its slipper. This vacuum-induced load accelerates wear between the slipper and retaining plate and can cause the retaining plate to buckle. If this happens it allows the slipper to lose contact with the swash plate during inlet, and it is then hammered back onto the swash plate when pressurized fluid acts on the end of the piston during outlet. The impact damages the piston slippers and swash plate, leading rapidly to catastrophic failure.<br /> <br /> In bent axis pump designs, the piston is better able to withstand vacuum-induced tensile forces. Piston construction is generally more rugged and the piston ball is usually held in its shaft socket by a bolted retaining plate. However, tensile failure of the piston stem and/or buckling of the retaining plate can still occur under high vacuum conditions.<br /> <br /> In vane pump designs, the vanes must extend from their retracted position in the rotor during inlet. As this happens, fluid from the pump inlet fills the void in the rotor created by the extending vane. If excessive vacuum exists at the pump inlet - it will act at the base of the vane. This causes the vanes to lose contact with the cam ring during inlet, and they are then hammered back onto the cam ring as pressurized fluid acts on the base of the vane during outlet. The impact damages the vane tips and cam ring, leading rapidly to catastrophic failure.<br /> <br /> Gear pumps are mechanically the least susceptible to vacuum-induced forces. Despite this fact, research has shown that a restricted intake can reduce the service life of an external gear pump by at least 50 percent.<br /> <br /> Pump inlet or suction filters usually take the form of a 150-micron (100-mesh) strainer, which is screwed onto the pump intake penetration inside the tank. In the 10 years I&#39;ve actively campaigned against their use - for the reasons outlined above - I&#39;m sure I&#39;ve heard all the counter arguments. And most arguments for the use of suction strainers are premised on bad design, bad maintenance, or a combination of both.<br /> &nbsp;<br /> The argument that suction strainers are needed to protect the pump from debris which enters the tank as a result of poor maintenance practices is a popular one. The reality is nuts, bolts, tools and similar debris pose minimal threat to the pump in a properly designed reservoir, where the pump intake penetration is located a minimum of four inches off the bottom. Of course, the proper solution is to prevent contaminants from entering the tank in the first place.<br /> <br /> A similar argument asserts that suction strainers are needed to prevent cross contamination where two or more pumps share a common inlet manifold. Here again, if suction strainers are necessary in this situation, then it is only due to bad design: the manifold is below the pumps&#39; intakes. If properly designed, there should be a head of oil above the inlet manifold and the inlet manifold should be above the pumps&#39; inlet ports. For cross contamination to occur in this arrangement, debris would have to travel uphill - against gravity and a positive head of oil. Something which is highly unlikely.<br /> <br /> But even in situations where a suction strainer is mandated - for whatever reason, the problem is: the cure can actually be worse than the disease. In other words, installing a filter of any kind in a pump intake line 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/hydraulic-oil-contamination-how-its-cure-can-be-worse-disease#comments Hydraulics At Work Tue, 13 Jan 2015 00:34:00 +0000 30091 at http://hydraulicspneumatics.com Self-made hydraulics expert dies in Texas http://hydraulicspneumatics.com/news/self-made-hydraulics-expert-dies-texas <div class="node-body article-body"><p><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/JMasculineWEB.jpg" style="width: 222px; height: 273px; float: right; margin-left: 4px; margin-right: 4px;" title="J. Masculine" />Joseph W. P.&nbsp; Masculine, of Montgomery, Texas, died December 23, 2014, after a long battle with cancer. Born September 21, 1953 in Columbia, S.C., he worked in several states serving the hydraulics industry. He is survived by his wife, Debbie Stewart Masculine; son, Ian Andrew Masculine, mother, Geraldine Masculine; brother, John C. (Wendy) Masculine; and two grandchildren and stepsons.<br /> An avid fisherman and photographer, Mr. Masculine worked for the majority of his life in hydraulics in the oil field and aircraft industries as a mechanic, troubleshooter, and self-taught designer. He had neen employed by <strong><a href="http://www.hyvair.com/" target="_blank">Hyvair Corp</a><a href="http://www.hsi-power.com" target="_blank">.</a></strong>, Magnolliam Texas, and, later, <strong><a href="http://www.hsi-power.com" target="_blank">Hydraulic Systems Inc.</a></strong>, now headquartered in The Woodlands, Texas. He was considered by many to be an innovator in the design and implementation of unique fluid-power applications.<br /> Memorial gifts may be made to the American Cancer Society or the Salvation Army. Burial was at Chapel of the Chimes in Hayward, Calif.</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/self-made-hydraulics-expert-dies-texas#comments News Mon, 05 Jan 2015 23:58:00 +0000 30171 at http://hydraulicspneumatics.com Fluid power innovator dies at 96 http://hydraulicspneumatics.com/news/fluid-power-innovator-dies-96 <div class="node-body article-body"><p><a href="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/Firth obit-web.jpg"><img alt="" src="/site-files/hydraulicspneumatics.com/files/uploads/2015/01/Firth%20obit-web.jpg" style="width: 222px; height: 333px; float: right; margin-left: 4px; margin-right: 4px;" /></a>Robert L. (Bob) Firth, age 96, of Edina, Minn., passed away December 27, 2014. Mr. Firth was a life-long fluid power engineer and inventor, with 14 patents to his name. He worked for <strong><a href="http://en.wikipedia.org/wiki/Republic_Aviation" target="_blank">Republic Aviation Corp.</a></strong> during World War II, testing mechanical equipment and hydraulic components used in the company&rsquo;s P43 and P47 <strong><a href="http://en.wikipedia.org/wiki/Republic_P-47_Thunderbolt" target="_blank">Thunderbolt</a></strong> fighter bombers. He was a self-made engineer, studying engineering at the New York City Public Library while working for Republic Aviation. After the war he worked at <strong><a href="http://www.nyab.com" target="_blank">New York Air Brake Co.</a></strong>, designing hydraulic pumps and braking systems and later became VP at <strong><a href="http://www.electrolco.com/" target="_blank">Electrol Co. Inc.</a></strong></p> <p>Firth moved to Minnesota in 1959 to work for the <strong><a href="http://www.eaton.com/Eaton/ProductsServices/ProductsbyName/Char-Lynn/PCT_242962" target="_blank">Char-Lynn</a></strong> Co., after which he started the Fluid Power Products Div. for the <strong><a href="http://www.donaldson.com/index.html" target="_blank">Donaldson Co.</a></strong> Starting with nothing, he developed a business that has grown to more than $200 million in sales today, with three dedicated plants around the world.&nbsp; He was also generous in donating his time, expertise, and wisdom as a founding member and past president of the <strong><a href="http://www.ifps.org" target="_blank">International Fluid Power Society</a></strong>.</p> <p>He was preceded in death by his wife of 70 years, Alva. He is survived by his brother, Henry Firth, his children Diane Meier (Tom), Laraine Swanson (Bill), Barbara Firth-Arnold (Daryl Arnold), Bob Firth, Jr. (Nancy) and Nancy Zaenger (Paul), 13 grandchildren 13 great-grandchildren, and his devoted caregiver and friend, Dawn Cole.</p> <p>Long-time close friend Pliny Smith revealed, &quot;When I met Bob, he was heading up the Fluid Power Product Division at Donaldson Co., reporting directly to Frank Donaldson, Jr.&nbsp; Bob was responsible for developing a full line of hydraulic filtration products, a strong base of customers, and to bring in sales.&nbsp; He once said, it all started with &ldquo;one man, one desk.&rdquo;&nbsp; With Bob&rsquo;s extensive hydraulic experience and industry contacts, he was the perfect man for the job. Bob knew what was lacking in the hydraulic filtration industry product offering at the time and Bob set out to fill these gaps.&quot;</p> <p>He continued, &quot;Bob was a true coach and mentor. He would take the time necessary to teach and&nbsp; entrust you to do the job.&nbsp; Bob made the rules, but he was definitely not a micro-manager &mdash; except for maybe at home. Bob always treated his employees fairly and expected the best from you.&nbsp; When the economy softened in the early 1980s &mdash; and layoffs were needed &mdash; Bob gathered all his employees in the same room to tell them exactly what was going on and why.&nbsp; Bob did not want rumors to circulate or for people to become distracted with things out of their control.&quot;</p> <p>Smith also offered that Firth had a passion for fishing &mdash; especially for Muskie. &quot;While Bob was working for New York Air Brake, he would often travel to their offices in Watertown, N. Y., located on the St. Lawrence River. While in Watertown, he would take advantage of the Muskie fishing in the Thousand Island region of the St. Lawrence.&nbsp; Bob was very creative and would make his own lures out of old spoons and broom handles.&nbsp; Bob even invented and patented the &ldquo;Fish Trap,&rdquo; which was used a bent wire to holdi the hook in place and out of the weeds until the fish hit.&nbsp; The Fish Trap is still sold today by one of the big Muskie Shops in Wisconsin.</p> <p>&quot;Bob also had a love affair with Long Island and surfcasting Montauk Point. There, he might catch blackfish, blues, striped bass, porgies, or fluke, and he always did well. In addition to surfcasting, Bob also loved clamming, catching crabs in crab nets, and finding oysters. Bob would bring home live lobsters and let them crawl around the kitchen, snapping at his children.&quot;</p> <p>Memorial gifts can be made to the IFPS Chapter 5 Past Presidents Fund by emailing <strong><a href="mailto:Jeanne.Morphew@HennepinTech.edu?subject=Question%20about%20donating%20to%20FPS%20Chapter%205%20Past%20Presidents%20Fund">Jeanne Morphew</a></strong> at Hennipin Technical College, or to the <a href="http://www.fpef.org/donate/corporate-scholarship-supporter/" target="_blank"><strong>Fluid Power Educational Foundation</strong></a>.</p> <p><strong><a href="http://m.startribune.com/obituaries/detail/56850/?fullname=robert-l-firth,-sr" target="_blank">Click here</a></strong> to leave a tribute in the funeral home&#39;s online guest book.</p> <p>&nbsp;</p> </div> <div class="og_rss_groups"></div> http://hydraulicspneumatics.com/news/fluid-power-innovator-dies-96#comments News Mon, 05 Jan 2015 23:58:00 +0000 30061 at http://hydraulicspneumatics.com From The Go-To Guy Chronicles: Un-common Sense and The Spectator Mentality http://hydraulicspneumatics.com/blog/go-guy-chronicles-un-common-sense-and-spectator-mentality <div class="node-body blog-body"><p>Last week I had cause to study a machine&#39;s technical manual. I&#39;m not sure whether it was lack of care in the original authorship or in the translation from Japanese to English, but the text was riddled with errors, omissions and ambiguities. The information it contained was so confusing I had to read each section several times to make any sense out of it. Thank goodness for standardized schematic symbols!<br /> <br /> This is the type of document that Robert Pirsig, in his book Zen and the Art of Motorcycle Maintenance, describes as a &#39;spectator manual&#39;. He muses that the attitude toward the machine of the guy who wrote it-and usually, the mechanic or technician reading it, is that of a spectator:<br /> <br /> <em>&quot;Implicit in every line is the idea that, &#39;Here is the machine isolated in time and in space from everything else in the universe. It has no relationship to you, you have no relationship to it, other than to turn certain switches, maintain [pressures], check for error conditions and so on.&#39; &hellip;Caring about what you are doing is considered either unimportant or taken for granted.&quot;</em><br /> <br /> Now there&#39;s an old-fashioned concept these days: caring about what you are doing. The thing is, if you don&#39;t care, if you&#39;re just a spectator reading a spectator manual, it doesn&#39;t really matter. But if you DO care, if you&#39;re a journeyman, a serious practitioner of the art, then having to wade through and decode a &#39;spectator manual&#39; is incredibly frustrating.<br /> <br /> We&#39;ve all experienced the frustration of this &#39;spectator&#39; mentality. If not in hydraulics, then almost certainly when trying to assemble a flat-packed gizmo in the home, from the hopelessly inadequate instructions provided. And witnessed it too. The mechanic or technician who cares about what he&#39;s doing is easy to pick. So are the ones who don&#39;t. It&#39;s the difference between a tradesman and a craftsman. A tradesman will (usually) get the job done. A craftsman will do it with a certain flair, an almost artistic quality. Watching a tradesman work may cause you angst. Watching a craftsman gives you peace of mind.<br /> <br /> Consider this (non-hydraulic) story sent to me by long-time member and &#39;go-to&#39; guy Fred Thompson:<br /> <br /> <em>&quot;I came across a tri-drive truck that had torn its tires off many times, blown diff after diff, through drives, and pulled the splines off the axles. It had cost the company close to one hundred thousand dollars in down time and shop repairs in one year. Plus the firing of good drivers that had nothing to do with the problem.<br /> <br /> But no one had taken the time to check the diff. gear ratios - just put more parts in, only to have them fail time after time. I marked all the drive wheels at 6 o&#39;clock after locking up the diff lockers and the power dividers, then drove the truck ahead on the gravel about two lengths and you and I both know what I found. The center diff was original with a ratio of 4.85 to 1 and the back and front were 5.38 to 1. The line sheet said 5.38 to 1. So guess what, like a bunch of sheep various mechanics had replaced each blown diff with the wrong ratio because no one had the brains to count the teeth on the pinion and the crown or check the number stamped on the pinion shafts for the gear ratios....&quot;</em><br /> <br /> This is a good example of the spectator mechanic/technician at work. &quot;My job today is to rebuild this diff. So I&#39;m gonna rebuild this diff. Then I&#39;m gonna go home and sleep easy.&quot; My observation is people are either engaged by problems--like a dog with a bone, or their not. I hate to think how much sleep I&#39;ve lost over the years due to a hydraulics problem I couldn&#39;t get off my mind and which kept me awake most of the night.<br /> <br /> In a world where common sense is increasingly uncommon, having it is a huge advantage. Similarly, in a world full of spectators -- where a declining number seem to really engage in and think about what they&#39;re doing, actually caring definitely makes you stand out.<br /> <br /> And not <em>caring</em> about the hydraulic machines you own or work on can be a big mistake. And a costly one. 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/go-guy-chronicles-un-common-sense-and-spectator-mentality#comments Hydraulics At Work Mon, 05 Jan 2015 21:35:00 +0000 30041 at http://hydraulicspneumatics.com