What You Need to Know About Hysteresis Brakes

author: Sunrise Group

2025-12-12

Bearing Version Hysteresis brake with shaft outline:

The armature and the brake magnet are the individual components making up the Sunrise Hysteresis Brake. Types: Torque-optimized series and power-optimized series.

Hysteresis Brakes are offered with a nominal torque ranging from 0.6 Nm to 26 Nm, depending on the size, available as bearing version with shaft end or non-bearing version as individual components.

The hysteresis brakes have a power capacity of up to 2 000 W. And this hysteresis brake can be used both in the slip mode range and as holding brake.

Bearing version with shaft
1. Brake magnet with solenoid
2. Armature with hysteresis ring

Hysteresis brake application as holding brake
Hysteresis brakes can also be used as holding brakes without (differential) speed. An initial twisting/ displacement of the rotor relative to the brake solenoid of around 5-10° is required for this. This also applies to the reversal of the rotational direction.

Hysteresis brake manufacturing and torque tolerances
When ordering the standard version hysteresis brake based on our catalog, an individual unit’s torque-current curve as well as its torque relative to nominal current may deviate slightly from the published data due to production tolerances. A typical deviation for individual units would be +/- 10%.
If needed, we can offer specially matched pairs for those applications requiring lower tolerances. The actual torque-current curve for a specific unit is exactly reproducible under the same conditions.

Sunrise Group Hysteresis Brake Roll-to Roll application

Ideal for Weaving, Winding, Twisting, Labeling and for printing machines, packaging machines, paper machines, film machines, textile machines, food machines, carton machine, diaper machines, all kind of Roll-to-Roll tension control equipment...