PM Brakes

Witton Kramer PM short-stroke magnetic brakes are suitable for operation on a.c. supplies from 110 to 575 volts and on all d.c. supplies up to 550 volts and comply with the relevant paragraphs of BS 466. The brakes are 8-hour rated in any period of 24 hours and the a.c. versions are fitted with internal silicon diode rectifiers. Series-wound d.c. brakes give full torque at the one-hour rating, pulling in at 60% or 40% of the full-load current, The design incorporates a number of advanced features which reduce maintenance to an absolute minimum

Brake shoes can be removed and replaced quickly, without dismantling the brake. Also, the pins securing the brake shoes are retained by large spring clips which are easily removed and replaced.

The torque can be adjusted by increasing the spring length if required.