Cushion Pressure Calculator

Design cylinder cushions to decelerate piston at stroke end, calculating peak cushion pressure and orifice size.

Input Parameters

Results

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Peak Cushion Pressure
psi
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Deceleration Rate
g
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Cushion Time
ms
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Energy Absorbed
ft·lbs
Note: Peak cushion pressure is typically 1.5× average due to non-linear deceleration. Keep below 5000 psi.

Reference

KE = ½mv² (m = W/386.4) Avg Cushion Force = KE / Cushion Length Peak Pressure = 1.5 × Avg Force / Bore Area Cushion Time ≈ 2L / v