Cylinder Force Calculator.

On a double-acting cylinder the push force (extension) exerted is

calculated by multiplying the piston area at the base of the rod by

the pressure acting on the piston area.

The pull force (retraction) is calculated by mutiplying the

annulus area on the rod end by the pressure acting on it.

The annulus is the difference between the total piston area and

the rod area.

To find the extension force of a cylinder, use the cylinder force formula:

Extension Force (lbs) = Piston Area x PSI

PSI = Pressure (Pounds per Square Inch)

r = Radius

Piston Area = (Pi X r^{2})

To find the retraction force of a cylinder, use the

cylinder retraction force formula:

Retraction Force (lbs) = (Piston Area - Rod Area) x PSI

Example: For a double-acting cylinder with a piston radius
of 2 inches,

a rod radius of 1 inch, 2000 psi
supplied to the base on extension,

and 2500 psi supplied
to the rod end for retraction:

Extension Force = (3.1416 x 2^{2}) x 2000
psi

Extension Force = 25,132.8 lbs

Retraction Force = Annulus x 2500 psi

Annulus = (3.1416 x 2^{2}) - (3.1416 x 1^{2})
=

Retraction Force = 23,562 lbs

(rounded to the nearest
10,000th)