TDR Tools
Piston force calculator
Live extend and retract force from bore, rod, working pressure and efficiency — switch between air and oil.
Theoretical / net force for planning. Seal friction, side loads and valve losses vary in the field — verify against the cylinder datasheet.
Pressurized side
Stroke preview
Visual only — does not change force.
6 bar
Pressure
Inputs
System
Common bores
Bore diameter
Rod diameter
mm
Working pressure
Force unit
Efficiency · 90%
Accounts for seal friction and losses (typical 85–95%).
Results
Extend force
1.68kN
(≈ 172 kg)
Theoretical: 1.87 kN (≈ 191 kg)
Retract force
1.51kN
(≈ 154 kg)
Theoretical: 1.68 kN (≈ 172 kg)
- Piston area
- 31.17 cm²
- Annular area
- 28.03 cm²
Formulas
F_extend = P × π × (D/2)² × η
F_retract = P × π × ((D/2)² − (d/2)²) × η
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