Features

The Witton Kramer PMD range of brakes have been designed to meet the dimensional requirements laid down by DIN 15435. This standard was set primarily for thrustor operated brakes at a time when these were the only alternative to a.c. electromagnetic brakes.

The introduction of reliable silicone diode rectifiers made possible development of self contained d.c. brakes eaqualy suitable for d.c. shunt or series windings and a.c. supply, giving the advantage of smaller unit size at a much lower cost, and of eliminating the maintenance associated with thrustors.

Torques can be varied by adjusting the spring length if required.