Fluid Power Journal

The Power Efficiency Diamond

By Brendan Casey, Hydraulicsupermarket.com I came across this instructive case study recently: In the quest for improved fuel consumption, the manufacturer of …

The Little Leaks That Keep Men Poor

With more storm clouds appearing on the economic horizon, it’s now more important than ever that every dollar spent on operating and maintaining fluid power …

How to Keep Tabs on a Hydraulic Machine’s “Vital Signs”

By Brendan Casey, HydraulicSupermarket.com My wife often asks me why I still do consulting work. She wonders why I happily leave the comfort of my office at …

Contamination: How Its Cure Can Be Worse Than The Disease

By Brendan Casey, HydraulicSupermarket.com Given that removing contaminants from the oil to extend hydraulic component life is the primary objective of …

How to Determine Hydraulic Pump Condition Using Volumetric Efficiency

Hydraulic pumps convert mechanical energy into hydraulic energy. A high-performance piston pump can make this conversion with an overall efficiency of 92%. If …

How to Correctly Interpret Case Drain Flows in Hydrostatic Transmissions

When a pump or motor is worn or damaged, internal leakage increases and therefore the flow available to do useful work decreases. This means that the condition …

The Real Value Of Hydraulic Circuit Diagrams

Like many readers of this Journal, I’m regularly involved in troubleshooting problems with hydraulic equipment. When in these situations, there are two …

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 …

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