Pneumatic Cylinder Force Calculator
Calculate ideal forces with optional friction allowance.
How to Use This Calculator
1
Enter pressure
Gauge supply pressure in pascals (Pa).
2
Enter bore and rod
Rod diameter is only used for retraction force.
3
Optionally add friction
Subtracts a constant allowance from both directions.
Formula
Fext = P · (π D²/4) − Ff, Fret = P · (π (D² − d²)/4) − Ff
Where: P is pressure, D bore diameter, d rod diameter, Ff friction allowance.
Example: P=0.6 MPa, D=0.05 m, d=0.02 m ⇒ Fext≈1178 N, Fret≈ 942 N (without friction).
Frequently Asked Questions
Gauge vs absolute pressure?
Use gauge pressure relative to atmosphere since opposing side is typically vented.
Units?
Inputs are SI; results are in newtons.