CYLINDERS
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HYDRAULIC CYLINDERS
A hydraulic cylinder is a mechanical actuator used to provide unidirectional force through a
unidirectional stroke. Hydraulic cylinders are used in almost every industry and are available in
a variety of configurations.The two main types of hydraulic cylinders are tie-rod and welded. Each of these cylinder types
can have unique applications due to their designs. Tie-rod cylinders are usually installed in light
to medium duty applications and are generally designed to be repaired or re-packed if neces-
sary. Welded cylinders are designed for most applications and are more complex in design, but
are generally more difficult to repair due to the welded design. Welded cylinders are typically a
better solution due to their compact design and for applications that require a robust design.The most commonly used mounting options are flange, trunnion, clevis, pin-eye, cross-tube,
spherical, and tang. Cylinder mounting is chosen based upon the application’s requirements.What is the force required in order to move your load? Force is calculated using the formula:
F = P x A
Force (F) equals pressure (P) times the area (A). Area is determined by calculating the surface
area of the internal piston. (Note, area for retract is the piston diameter minus the rod diameter.)Telescopic cylinders are used when an application requires a compact retracted dimension, but
needs a longer stroke. These cylinders are generally single acting and are available in two to
five stages. Common mounting options for telescopic cylinders are trunnion and cross-tube.The most common questions asked when assisting you with your cylinder selection relate to
the following items:- Retract dimension (center of pin to center of pin)
- Stroke length (inches)
- Mounting types
- Port size and type (SAE or NPT)
- Pressure rating (PSI)
- Bore diameter (inches)
- Application details
HYDRAULIC CYLINDERS
MOUNTING OPTIONS
SIZING YOUR CYLINDER
TELESCOPIC CYLINDERS
CYLINDER MEASUREMENTS^
Please note that all column loads and shipping weights are in lbs. (unless otherwise noted).
Also, bore, stroke, rod diameter, retract, extend, and pin diameter measurements are in inches
(unless otherwise noted).