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Hydraulic-Electric Analogies: Motors and Generators, Part 6

Understanding electrical behavior can improve your understanding of hydraulics. For example, a shunt-connected generator is perfectly analogous to a variable-displacement pump. Understanding...

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A Speed-Variable Revolution in Hydraulics

Andrew Binversie and Paul Stavrou, Bosch Rexroth Corp. To optimize efficiency in today’s electrified hydraulic systems, designers must make decisions based on a strong understanding of the VFD, system...

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Pop the Cavitation Bubble in Hydraulic Systems

Russell Rochambeau, Valin Corp. Making smart design decisions, particularly in relation to the suction line, can avoid potentially severe cavitation-induced damage to hydraulic pumps. Making smart...

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Troubleshooting Challenge: Pump Noise is Intermittent

A hydraulic system at a steel mill’s exit end pushes and pulls a sled that moves finished steel coils to the side for unloading. The operator of the line complained to maintenance about a strange noise...

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Think You Know Flanges?

Though many SAE 4-bolt hydraulic flanges look quite similar to each other, SAE Code 61, SAE Code 62, and Caterpillar 4-bolt flanges exhibit small dimensional and physical differences. read more

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Supermaterial Press Improves Efficiency with Variable-Speed Pump Drive

Bosch Rexroth Creating supermaterials, such as synthetic diamonds and super-hard metals, requires a super-powerful press. The press must be able to apply extreme pressures and temperatures—like those...

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Hydraulics & Pneumatics Products of the Week (9/17-9/24)

Check out five more products for fluid-power applications, ranging from fuel-conservative pumps to clean-transfer oil containers.read more

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Torsional Vibration Analysis Critical to Tier-4 Engine and Powertrain-System...

Steve Gluck and Matthew Witter The more powerful and compact Tier-4 engines are susceptible to component failures caused by torsional-vibration issues in powertrain-system design. Unless a gear rattle...

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A Pump that Tolerates Torsional Vibration

Steve Gluck and Matthew Witter Parker Hannifin's Gold Cup pumps and motors underwent extensive instrumentation and analysis, which led to new Severe and Extreme barrel bearing designs.read more

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Mitigating Noise in Hydraulic Systems

Mike Beyer, Eaton Hydraulics Quieter products not only have a perception of higher quality by customers and end users, but can improve the health, safety, and productivity of machine operators as...

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2015 Engineering Salary Survey: Compensation Is Just the Beginning

Nearly 1,700 members of the fluid power industry participated in the Hydraulics & Pneumatics Salary Survey. read more

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Servopump Holds Potential to Slash Energy Consumption by 70%

Today’s industrial hydraulic systems generally require tight control, which translates to fast response and pinpoint repeatability. Electrohydraulic servovalves have served these demanding applications...

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Hybrid-Drive Transmission Surpasses EPA Standards

Parker-Hannifin's RunWise reduces fuel consumption by 43% versus conventional diesel-fuel refuse haulers. A standard recently proposed by the U.S. Environmental Protection Agency (EPA) calls for large...

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Hydraulic-Electric Analogies: Hydraulic Power Conversion, Part 1

Power generated from hydraulic-fluid systems exhibits similar ac current-flow traits like that of its electrical counterparts. Power generated from hydraulic-fluid systems exhibits similar ac...

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Troubleshooting Challenge: Accumulator Pre-Charge Changing

A mushroom farmer needed to solve the problem of their lift slowing down, and tried different methods to address possible issues with the HPU.read more

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Hydraulic-Electric Analogies: Hydraulic Power Conversion, Part 2

Power generated by hydraulic systems exhibits current flow traits similar to those of its electrical counterparts. Power generated by hydraulic systems exhibits current flow traits similar to those of...

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Working with the Good Ol’ Boys

Chauntelle Baughman, CFPHS Being a woman in the hydraulics business certainly has its challenges—most notably, earning the respect of your clients and peers.read more

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Fluid-Power Authority Russ Henke Dies After 60-Year Career

Russell W Henke, P. E., a true driving force in establishing the Fluid Power Institute at the Milwaukee School of Engineering (MSOE), died November 2, 2015 after a long battle with Alzheimer’s disease....

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Smart Fluid Power on the Internet

Have you jumped on the Internet of Things bandwagon yet? It’s the wave of the future, so you’d better get hopping before it blows right past you. Have you jumped on the Internet of Things bandwagon...

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Hydraulic-Electric Analogies: Hydraulic Power Conversion, Part 3

Power generated by hydraulic systems exhibits current flow traits similar to those of its electrical counterparts. Power generated by hydraulic systems exhibits current flow traits similar to those of...

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