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Posted on July 21, 2022

The Importance of Contamination Control in Hydraulics

Particles in the Fluid Can Cause Hydraulic System Failure

Hydraulic system components can fail due to a microscopic particle in the fluid (a dust speck, a small metal chip, abrasive dirt, moisture, etc.) This can cause a ripple effect in the system and damage system components. Often, the cause of the problem is a faulty or incorrect seal, allowing particles to enter and contaminate hydraulic fluid. This, along with improper handling of components, can all create costly system failure and force expensive downtime.


Posted on January 24, 2022

Safeguarding Demanding Applications with Hydraulic Flange Connections

Hydraulic flange connectionsare used in demanding applications for their ability to withstand high pressure, vibration, and shock. They also make an excellentconnection between hoses, hose to pipe or to system components. . . when properlyassembled. 

Posted on November 30, 2021

Material Selection Mistakes Can Lead to Disaster

It’s important to find material that best fits your hydraulic system to ensure safe operation and superior performance. Many factors must be understood before selecting, and those include structural, material properties and environmental impact.

Posted on June 11, 2020

Follow These Guidelines When Designing Your Hydraulic System

Hydraulic system designs for heavy equipment and other machinery must take into account how and where the system is to be used.  In accordance with ISO 14121-1, a risk assessment must be conducted to ensure there are not any predictable risks in the design that could carry over into the field.  Reasonably foreseeable misuse shall not cause hazards.  If any portion of the hydraulic system design is unable to foresee potential risks in the field, then safeguards and warnings must be integrated into the system following safety standards as identified in ISO 12100.  As further precaution, ISO 13849-1 is used in the design of control systems.

Posted on June 02, 2020

Designing Hydraulic Fittings and Flanges into a System

When designing hydraulic systems, it's important to know that every system incorporates a series of fittings and flanges. And because of the need for system maintenance, removable fittings are required in the designing of hydraulic systems, except for certain specialized systems.

Posted on May 28, 2020

Drain Lines, Valves, Filters, Lines and Pumps in a Hydraulic System

Sizing case drain lines. Typically, hydraulic motors and pumps have hoses that run to a case drain in order to drain excess internal oil from the motor.  Having a case drain usually requires running motors in series to avoid damage.  If the case drain line is undersized on a hydraulic pump (piston) it can cause the pressure in the case to be too high.  As the pump’s life depreciates its volumetric efficiency will decrease, which in turn will increase leakage from the case drain line.  If there is extreme case pressure it can cause the piston shoe to lift off the swash plate.  This will cause damage that will force the pump to stop working.  Go by the case drain port size or up-size it. It is important to make sure the case pressure is below the max rating, which if necessary, can be adjusted at the case drain port size, or increase the size of the port.  Case pressure can also become too high at:

Posted on May 21, 2020

A Quick Guide to Selecting Components for Your Hydraulic System

Selecting the correct inside diameter of fluid piping, such as steel tubing, steel pipes and hydraulic hoses

Piping should be sized to avoid drops in pressure when considering aircraft hydraulic system components. The unstable flow causes unnecessary friction between the walls of the piping and the fluid, ultimately creating lost energy in the system which will raise the temperature of the fluid. This is due to excessive fluid velocity which causes turbulence and unplanned pressure drops.  By maintaining a practical fluid velocity, pump inlet conditions will be controlled which will reduce the potential of excessive heat in the aircraft hydraulic system components. 

Posted on May 13, 2020

Why the Design of A Hydraulic System Matters

Hydraulic systems in heavy equipment are designed utilizing certain principles for performing work using multiple components.  For instance, motors activate pumps; the pumps pressurize hydraulic fluid that passes through tubes to actuators.  As an example, the actuators in an excavator move the arm or bucket. The fluid passes through filters, is recycled through the system, and circulates back to the pump.

Some additional information in one line


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