Torque Transmitted by Clutch Calculator

It calculates the maximum torque that can be transmitted by a clutch that is undergoing uniform wear.
To use this calculator, enter value in empty boxes below then click on Calculate button to compute the maximum clutch torque.

  • For a clutch operating dry the coefficient of friction will normally be in the range of 0.2 - 0.45.
  • For clutches running in oil the coefficient of friction will typically be in the range 0.08 to 0.15.
  • Typical lining pressures are:
    Moulded materials and sintered metals - 1 to 2
    Cast iron - 0.7 to 1.7
    Cork - 0.05 to 0.1

Note: Torques of less than 0.001 Nm will not be correctly displayed.

Clutch plate outer diameter:
Clutch plate inner diameter:
Coefficient of friction:
Maximum permitted lining pressure:
Number of friction surfaces:
Maximum clutch torque: