Engineering lab · Interactive tool
Compression Spring Calculator.
Estimate rate, force, corrected shear stress, solid height, and coil-bind margin for a round-wire helical compression spring.
Round-wire compression spring / static screening
Live calculationHelical spring rate + Wahl correction
k = Gd⁴ / 8D³NₐA viable rate still needs a viable spring
The model applies the classical helical-spring rate and Wahl curvature correction. It helps expose geometry, load, stress, and travel tradeoffs early.
Production design must also resolve fatigue, end conditions, free-length variation, set, buckling, surge, relaxation, corrosion, temperature, and supplier process capability.
Before specifying the spring
- Define force targets at every operating position
- Preserve practical clearance before solid height
- Check spring index and manufacturability
- Evaluate fatigue at mean and alternating stress
- Control buckling, guidance, ends, set, and relaxation
Direct senior involvement
Turn the product decision into a clear next step.
Share a non-confidential summary, the current stage, and the outcome the team needs.
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