Wear-free hysteresis brake for operating with a brake torque independent of engine speed has a magnetic body and a hysteresis ring on a rotary armature designed as a fan wheel

摘要

A hysteresis brake (1) has a magnetic body (2) with outer and inner poles and a hysteresis ring (14) enclosed from the center by these poles so that there are inner (15) and outer (16) air gaps. The hysteresis ring fastens on a rotary armature designed as a fan wheel (11). The magnetic body runs on bearings on a shaft (8).