Product features
HIGH TORQUE LINE
Permanent magnet brake
with higher torque
About the High Torque Line
The High Torque series combines the well-known characteristics of permanent magnet brakes. Additional benefits include higher torque at the same size and power consumption, high constancy of torque over the entire service life, and an extended temperature range.
Functioning
The High Torque brake is a dry-running component utilizing the force effect of a permanent magnetic field to generate the braking effect. To release the braking effect, the permanent magnetic field is overlaid by an electromagnetic counter field (electromagnetically opening system). Through the play-free connection of the armature with the flange hub of the brake, torsionally play-free transmission of braking torque to the shaft of the machine (e.g., motor) and safe residual torque-free release of the High Torque brake is ensured, making it especially suitable for installation in servo motors.
Construction
Between the housing and the flange of the High Torque brake is the fixed excitation winding, whose connection leads are routed at the defined cable outlet of the brake. The permanent magnets, axially arranged between the housing and the flange, generate the magnetic field used to build up the braking effect. The armature is axially movable, torsionally stiff, and friction-free connected to the flange hub via segment springs and fixing rivets. This ensures residual torque freedom in horizontal and vertical operation. The new air gap s between the armature and the housing of the High Torque brake is automatically set during brake assembly (e.g., via installation tolerances). The flange hub is torsionally stiff and axially fixedly connected to the shaft of the machine. Under the influence of the permanent magnetic field, the armature is force-locked pressed against the housing and flange. The resulting friction force produces the braking torque. When a DC voltage is applied to the excitation winding of the High Torque brake, the force effect of the permanent magnetic field on the armature is canceled due to the electromagnetic counter field and the brake is released by spring force. Apart from the slight axial force of the segment springs, the shaft to be braked experiences no axial force.
Features at a glance
– Higher torque at the same size compared to classic permanent magnet brakes
– High constancy of torque over the entire service life