Check a parallel key for shear and bearing (crushing) failure under transmitted torque, and calculate minimum required key length.
Reference: IS 2048 / ANSI B17.1 (typical key proportions)Key & Keyway Design Calculator
Inputs
Results
- Tangential Force on Key
- 10000.0N
- Shear Stress
- 16.7MPa
- Bearing (Crushing) Stress
- 50.0MPa
- FOS — Shear
- 3.60
- FOS — Bearing
- 2.00
- Minimum Required Length
- 25.0mm
Formula Used
⚠ For preliminary design and educational use only. Verify all results against applicable codes and standards before use in production or safety-critical applications.
About this calculator
Part of our Mechanical Calculators collection. Beams, bolts, springs, gears, bearings, and core ME calculations.
How it works
Checks parallel key shear stress and bearing/compressive stress for a shaft-hub keyway connection per standard key sizing and allowable stress limits.
Enter your values in the inputs above and click CALCULATE. Results appear on the right without a page reload. No login and no server upload.
Privacy and accuracy
Every calculation runs locally in your browser. Your design data never leaves your device. Results are intended for preliminary engineering work. Always verify critical designs with qualified review and applicable standards before production use.
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