Quiet Brakes

Our quiet brakes have few moving parts and integrated features to prevent noise during setting and releasing of the brake, including:

  • O-ring on hub to prevent friction ring rattle
  • Coil insulation: Class 180(H)
  • Optional manual release
  • Comes standard with carrier friction disc 

These quiet brakes are ideal for high cycle applications including residential elevators & dumbwaiters.


disc motor brakes with spline hub for quiet operation AAB 331 Series

AAB 331 Series

  • Torque (lb-ft): 3 - 300
  • Nm: 4 - 400
  • IP Rating: 43, 56

View AAB 331 Series

Quiet Motor Brake Technology

Stearns armature actuated brakes with ultra-quiet features are ideal for applications where motor brake operation has to be extremely quiet, including:

A combination of the following features are used to quiet the “popping” associated with typical brake setting and releasing:

These quiet features are included based on specific application requirements. Stearns quiet technology can be incorporated into any of our Series 33X AAB design brakes, reducing brake noise to a level that is barely audible.

Contact Stearns technical support for assistance with selecting a quiet brake for your application.