Overspeed brakes go modular
Centrifugal brakes incorporated in transmissions automatically prevent shaft overspeeding for reasons of safety or machine damage. Such brakes are often fitted to the non-driving end of the electric motor by extending the shaft. This approach however does result in a ‘special’ which can affect motor availability, price and pose a problem at a later date when a replacement maybe urgently required.
Combidrive can now offer a range of brakes in modular form prepared to plug in between a standard metric motor and the gearbox. The assembly comprises the brake hub with friction lined flyweights constrained by springs which dictate the engagement speed.
The hub accepts the motor shaft on one side and engages with the input to the gearbox on the other. The flanged housing maintains concentricity and squareness to the associated components and is prepared to absorb and dissipate the heat produced during braking.
Combidrive says that at present modular brake assemblies can be delivered to suit standard metric motors in frame sizes 71, 80/90, 100/112, and 132. Hub bore/shaft range is 12mm to 65mm.
Latest news about Brakes, clutches and couplings