Spring Return Calculator

Calculate spring force requirements for hydraulic cylinder retraction and fail-safe return

Input Parameters

Results

--
Min Spring Force (ext)
lbf
--
Required Spring Rate
lb/in
--
Spring OD (approx)
in
--
Stored Energy
ft-lb
Note: Spring force at compressed length should not exceed 80% of solid stress. Use nested springs for high force in compact space.

Reference

F_min = F_friction + F_accel + margin | k = (F_max - F_min) / stroke | E = (F₁+F₂)/2 × stroke / 12