How It Works - Clutch Theory
+Clutch Sizing Calculator
Calculate friction clutch torque capacity, required dimensions, or actuating force for disc clutches.
Clutch Geometry
mm
mm
Number of friction surfaces
Loading
N
N-m
✓
Adequate Capacity
Torque capacity meets requirements
Clutch Results
Torque Capacity
--
Required Actuating Force
--
Effective Radius
--
Contact Area
--
Contact Pressure
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Safety Factor
--
Enter clutch parameters to calculate capacity.
Design Guidelines
Recommended ri/ro Ratio
0.45 - 0.80
Max p x V (MPa-m/s)
1.0 - 3.0
Typical mu (dry)
0.25 - 0.50
Friction Materials
| Material | mu | p_max (MPa) |
|---|---|---|
| Woven asbestos-free | 0.30-0.40 | 0.7-1.0 |
| Molded organic | 0.25-0.45 | 1.0-1.7 |
| Sintered metal (dry) | 0.25-0.35 | 1.4-2.1 |
| Sintered metal (oil) | 0.08-0.12 | 2.1-2.8 |
| Paper (oil) | 0.10-0.15 | 1.4-2.1 |