Fluid Power Journal

Proactive Maintenance 101: Define Your TOW!

The most important proactive maintenance exercise you can do for a piece of hydraulic equipment is to define its temperature operating window (TOW) and then …

How to Solve Hydraulic System Overheating Problems

Based on polls I’ve conducted with my Hydraulics Pro Club members over the years, overheating ranks number two in the list of most common problems with …

The Negative Effects of Over-Pressurization

Power transmission in a hydraulic system is a product of flow and pressure. It follows that the power rating of a hydraulic pump or actuator is a product of …

Troubleshooting: Science or Black Art?

The increasing complexity of today’s hydraulic equipment means there is a lot to know about proactive maintenance to achieve optimum reliability. It’s my …

Which Hydraulic Fluid?

Most hydraulic systems will operate satisfactorily using a variety of fluids. These include multigrade engine oil, automatic transmission fluid, and more …

Analysis of a Hydraulic Oil Failure

I recently conducted failure analysis and a reliability audit on a 300-kilowatt (400-hp) hydrostatic transmission. This hydraulic system was running a …

Conductor Face-Off: Hose Versus Tube

What do lifting chains, bladder-type accumulators, and hydraulic hoses all have in common? Well, they typically have only one mode of failure—and that’s …

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