Clutch Torque Calculator
Torque capacity of a plate clutch from springs, friction and geometry.
Size clutches at 1.5–2× engine torque — slip is heat, and heat kills linings. 'Uniform wear' (the worn-in state) uses mean radius; new clutches briefly enjoy ~10% more.
Formula
Clutch Torque Calculator is a free clutch torque for mechanical and machine-design engineers — instant, accurate and 100% client-side, with the governing formula and reference shown next to the result so the number can be defended, not just quoted.
About Clutch Torque Calculator
Torque capacity of a plate clutch from springs, friction and geometry. The calculation implements T = n·µ·F·r_mean (uniform wear) (Clutch design — Shigley ch. 16). Size clutches at 1.5–2× engine torque — slip is heat, and heat kills linings. 'Uniform wear' (the worn-in state) uses mean radius; new clutches briefly enjoy ~10% more.
How to use Clutch Torque Calculator
- 1Enter Axial clamp force in N.
- 2Enter Friction coefficient (Organic lining 0.3 · sintered 0.4 · wet 0.1).
- 3Enter Outer friction radius in mm.
- 4Enter Inner friction radius in mm.
- 5Read Torque capacity instantly — no submit button needed.
- 6Need US units? Flip the SI/Imperial toggle and every field converts.
Why use Clutch Torque Calculator?
- ✓Implements the standard formula — T = n·µ·F·r_mean (uniform wear)
- ✓Reference cited on-page: Clutch design — Shigley ch. 16
- ✓One-click SI ⇄ Imperial toggle — values convert in place, physics stays in SI
- ✓Live worked example: the substitution recomputes from your numbers
- ✓Runs entirely in your browser — nothing uploaded, free forever
Frequently asked questions
What formula does the Clutch Torque Calculator use?+
It computes T = n·µ·F·r_mean (uniform wear), per Clutch design — Shigley ch. 16. The formula is displayed under the result along with a worked example substituted with your own inputs.
What should I keep in mind when using this calculator?+
Size clutches at 1.5–2× engine torque — slip is heat, and heat kills linings. 'Uniform wear' (the worn-in state) uses mean radius; new clutches briefly enjoy ~10% more.
Is this suitable for machine design coursework?+
Yes — these are the exact Shigley/Machinery's-Handbook formulas, with the substitution shown step by step, so you can follow the worked example into your own calculation sheet.
Is the Clutch Torque Calculator free to use?+
Yes — completely free, no sign-up, no limits. It runs client-side in your browser, so inputs stay private and results are instant even on slow connections.
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