How do you calculate the extension force of a cylinder?
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 r2)
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 22) x 2000 psi
Extension Force = 25,132.8 lbs
Retraction Force = Annulus x 2500 psi
Annulus = (3.1416 x 22) - (3.1416 x 12) =
Retraction Force = 23,562 lbs
(rounded to the nearest 10,000th)
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