Friction Clutch Calculator

Calculate clutch torque capacity, thermal energy, plate sizing using uniform pressure and uniform wear theories.

Normal force pressing the clutch plates together.
N
Organic: 0.3-0.4, Sintered: 0.3-0.5, Cerametallic: 0.35-0.5.
Outer radius of the friction surface.
mm
Inner radius of the friction surface.
mm
Single plate: 2, Multi-plate: 2n (n = disc pairs).
Speed difference between driving and driven sides.
rpm

Results

Torque (Uniform Wear)-N·m
Torque (Uniform Pressure)-N·m
Power Capacity-kW
Engagement Energy-kJ
References: Shigley's Ch. 16 — Clutches; SAE J866