Test Your Skills
Each month Fluid Power Journal brings you an industry problem with a solution the following month.
Attaching Clamps for Proper Assembly
Low-pressure hose assemblies require properly placing the clamps so that they will seal and retain the fitting. The clamp position “A” dimension is very …
Determining the Cause For A Cylinder Not Extending
There are three basic requirements to cause a double-acting cylinder to extend, as shown in Fig. 4.17: Flow must be supplied to the cap-end of the cylinder …
Understanding the Selection Process of a Pressure Control Valve
Pressure control valves are sensitive to the direction of flow. For example, flow cannot pass through a relief valve from T to P. Some pressure control valves, …
Understanding Basic Types & Applications of Actuators
Linear Actuators Cylinders may be single acting or double acting. Single acting cylinders exert a force due to air pressure only in one direction. Springs or …
Replacing & Aligning a Hydraulic Cylinder
When installing a replacement cylinder, confirm that it matches the original part. Inspect the linkages and connection points for wear, such as cracked or …
Test Your Skills: Ensure Component Compatibility
Some fluids with very good lubricity and viscosity characteristics may prove caustic to the material in pumps, actuators or valves, especially when hot. …
The “STAMPED” Method
Designing & specifying tube assembly components The acronym “STAMPED,” as used for hose assemblies, is equally as important to use when developing tube …
Test Your Skills: Understanding the Operation of Servo Valves
Servo valves have been used to provide proportional control of fluid power systems long before proportional valves were developed. Servo valves are capable of …
Test Your Skills: Calculate the Oil Flow Rate & Pressure From a Pneumatic Intensifier
Air-oil intensifiers combine advantages of both pneumatics and hydraulics in one system. Air is spongy and lacks precision and stiffness, while hydraulic oil …
Test Your Skills: Hydraulic Components in Circuits–Mobile Valves
Load-sensing valves are designed to be used with a load-sensing pump. The valves typically have spools with metering notches allowing proportional control of …
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