The Slim Line includes spring-pressure single-disc brakes for brake discs mounted non-positive on the shafts to be retarded. The brake disc, which is permanently connected to the shaft, can be designed as a motor fan. Owing to the single-disc brake design, SLIM LINE brakes are particularly flat. Based on the working principle, residual-free lifting is achieved. Electromagnetically-operated spring-pressure brakes build up the braking torque when the current is switched off.
The spring-applied single-surface brake is designed to operate dry. The force generated by an electromagnetic field is utilized to overcome the braking effect produced by the spring force. The spring-applied single-surface brake engages in unpowered condition and releases when DC voltage is applied to the field coil. The force-locked frictional connection between the fan (acting as frictional element) and machine shaft (e.g. motor shaft) ensures that the torque generated by the spring-applied brake (brake torque) is reliably transmitted to the machine (motor).