Fluid Power Journal

2017 Photo Contest Winners

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 …

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Basic Vacuum Conveying (6/26/2017)

There exist many different methods of conveying product with vacuum. Some are very elaborate, and indeed, some are very expensive. The conveyance of material in a production environment is very common and widespread in industries such as food, pharmaceuticals, and plastics. This article focuses on point-of-use conveyors that are very common in basic conveyance of […] Read More

How to Determine Hydraulic Pump Condition Using Volumetric Efficiency (6/22/2017)

Hydraulic pumps convert mechanical energy into hydraulic energy. A high-performance piston pump can make this conversion with an overall efficiency of 92%. If this pump drives a piston motor, then the motor can convert this hydraulic energy back into mechanical energy with an overall efficiency of 92%. The total, overall efficiency of this hydraulic drive, […] Read More

Pressure & Vacuum in Print (6/19/2017)

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 utilize vacuum throughout the machine to transfer sheets of plain paper from one end to the finished printed paper at the other. Common printing projects are large quantity runs of […] Read More

We’re Hiring! (6/16/2017)

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 our offices in Pennsylvania, much of the work may be accomplished from a home office. Job Description – following is a brief description of some of the major job […] Read More

How to Correctly Interpret Case Drain Flows in Hydrostatic Transmissions (6/15/2017)

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 of a pump or motor can be determined by measuring the flow from its case-drain line (internal leakage) and expressing it as a percentage of its theoretical flow. […] Read More

The Real Value Of Hydraulic Circuit Diagrams (6/12/2017)

Like many readers of this Journal, I’m regularly involved in troubleshooting problems with hydraulic equipment. When in these situations, there are two things I always do before reaching for any of my diagnostic tools. The first is to conduct a visual inspection of the hydraulic system, checking all the obvious things that could cause the […] Read More

Changing a Vacuum Cup (6/8/2017)

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 product while it is lifted, clamped, or conveyed from one place to another. There are many different designs and styles available from numerous manufacturers in various materials […] Read More

Vacuum Basics (6/7/2017)

By Richard Throop Vacuum often seems like a mystery or “black art,” but vacuum is actually quite simple. When we talk about vacuum, we are talking about operating in the pressure region below atmospheric pressure (14.7 psi absolute at sea level) instead of above atmospheric pressure. The same principles and laws that work within pneumatics, […] Read More

Use Protection (6/5/2017)

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 offer the user the same lifting capacity, but Fig. 2 has a dual circuit. This is useful if handling one or two parts, depending on the machine operation, […] Read More

Proactive Maintenance 101: Define Your TOW! (6/1/2017)

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 ensure the equipment always operates within this window. Operating temperature is inversely related to oil viscosity. If operating temperature is too high for the grade of oil being used in […] Read More

Fluid Power on Capitol Hill (5/31/2017)

NFPA, CCEFP, and several industry supporters visited Capitol Hill on February 27-28, 2017 to promote the proposed Commercial Off-Road Vehicle R&D Program through the Vehicle Technology Office within the U.S. Department of Energy (DOE). This program is important to the fluid power industry because: The commercial off-road market consumes 8% of total transportation energy, which […] Read More

NASCAR Driver Ryan Newman Visits Aggressive Hydraulics (5/30/2017)

Aggressive Hydraulics received a surprise visit from NASCAR driver Ryan Newman before his recent victory in Phoenix, Ariz. Ryan toured the facility and met with the Aggressive Hydraulics team to kick off the company’s renewed support of the #31 car Ryan drives on the NASCAR circuit. During his visit, Ryan shared his thoughts on NASCAR, […] Read More

June is Safety Awareness Month! (5/29/2017)

IFPS, in conjunction with the International Hydraulics Safety Authority*, offers online Hydraulic Safety Awareness Training courses. These courses provide an awareness of hydraulic hazards in the workplace, in-depth reviews of potential exposures to injury from hydraulic systems, and ways to reduce risk and eliminate hazards for workers, equipment, companies, and the environment. IFPS offers four (4) […] Read More



Fluid Power Journal is the official publication of the International Fluid Power Society



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