Fluid Power Journal

Features

Effects of Grease on Rotary Shaft Seals

Less than 20% of seals and gaskets ever reach their expected “operating life” in any given application. Of the 80% that are replaced due to scheduled …

Basic Vacuum Conveying

There exist many different methods of conveying product with vacuum. Some are very elaborate, and indeed, some are very expensive. The conveyance of material …

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 …

2017 Photo Contest Winners

The Photo Contest was created to celebrate the wonder of fluid power and the talented professionals who work in the industry. This year’s contest resulted …

Pressure & Vacuum in Print

In the printing industry, vacuum and low-pressure air is used extensively in the sheet feeding heads of web offset printing presses (Fig. 1). These presses …

We’re Hiring!

The Fluid Power Journal is searching for an editor. The editor is a flexible position and although the ideal candidate would be someone physically working from …

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 …

Changing a Vacuum Cup

Vacuum cups are used throughout industry for so many applications that the list would take up most of this page. Fundamentally, vacuum cups are used to grip a …

Vacuum Basics

By Richard Throop, CFPS Vacuum often seems like a mystery or “black art,” but vacuum is actually quite simple. When we talk about vacuum, we are talking …

Use Protection

Centralized vacuum systems, where a single vacuum generator is used (Fig. 1 and Fig. 2), more often than not utilize a single vacuum filter. These two systems …

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 …

Don’t Forget to Celebrate!

Here are some ideas to get you started, but it’s your day to celebrate your

Benefits of Designing Hydraulic Equipment with Hydraulic Cylinders Per ISO Standards

By Lido Boni, Past Convenor, ISO TC 131/SC3/WG1 Hydraulic Cylinders There are four main ISO standards for mounting dimensions related to hydraulic cylinders. …

Next-Generation Aerospace Sensors Respond to New Demands

The advent of advanced composite materials used in constructing aircraft, along with the push to reduce costs of operation, have resulted in significant …

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