Braking torque

The braking torque of a spring-applied brake is the torque generated by friction that slows down or holds a rotating shaft in a de-energized state. It is generated by the force of pretensioned compression springs, which press an armature disk against a friction surface and thus generate a braking effect. The level of the braking torque depends on the spring force, the friction coefficient of the pads and the effective friction radius.