Pneumatically actuated clutches and brakes

grabcad

With pneumatic clutches, the axial thrust for building up the torque is transmitted by a piston running in a cylinder. When the cylinder space is depressurised, the springs push back the piston to its starting position. With spring-applied brakes, the axial thrust required for building up the torque is generated by springs. The brake is released by applying the appropriate pneumatic pressure to the piston. In the combined units, the frictional connection is produced on the clutch side with air pressure and on the brake side with spring pressure. The number of springs and thereby the spring pressure can be selected in accordance with the level of torque required.