With the new generation of Magnetic and hysteresis disk couplings From the Gerwah range, Ringfeder offers a reliable solution for non-contact transmission and limiting of torques. The new models are very suitable for areas where a hermetic separation of input and output side is necessary and high demands are made on tightness and hygiene. Due to their contact and wear-free operation, they are predestined for use in the chemical industry, under water or in closed containers.
Compared to conventional couplings, the maintenance effort is reduced to a minimum, since the maintenance and repair of the usual shaft bearings and seals is eliminated. The models GWM 5202.3 and GWM 5204.3 are permanent magnetic synchronous couplings with two opposite discs, which are provided with strong magnets. The torque is transmitted over an air gap away contactlessly by the magnetic field, whereby the operation through housing walls is easily possible. The connection to the shaft is made either by means of a bore and clamping screws (GWM 5202.3) or via a clamping hub (GWM 5204.3). In case of overload, the magnetic field forces are exceeded; The coupling slips through and protects the application from damage. In contrast to the mechanical models, the coupling works wear-free, even in the case of high speeds and long slipping times.
The new program is completed by the hysteresis couplings GWM 5202.4 and GWM 5204.4. The two models transmit a constant torque over large speed ranges. Instead of permanent magnets, high-quality hysteresis material is used, which can be reversed with little energy expenditure. The system consists of a synchronizer disc clutch half and a hysteresis clutch clutch half. In case of overload, the clutch will slip through and continue to transmit the rated torque. She now works as a brake; The resulting braking energy is released as heat loss to the environment.