MB57 Motor Brake

For NEMA 24 motors with double-ended shafts

The motor brake is a safety lock for axis drives. It prevents unintentional movement of the machine when switched off, especially in the event of a power failure. The Z-axis is particularly susceptible to this, and a gradual drop can occur, especially when using a heavy milling spindle—with potentially fatal consequences when switched back on.

The motor brake prevents such movement by means of a brake disc that is spring-loaded when idle. When the operating voltage of 24 V is applied, the brake is released electromagnetically, allowing the axis to move freely.

Technical specifications:
Shaft diameter: 8 mm
Braking torque: 6 Nm
Operating voltage: 24 VDC
Power consumption: 6.8 W

Compatible with: (Name / Item No.)
86BYGH450H-03AA / ESM.86156.84MD

Before ordering, compare the mounting dimensions shown in the data sheet with the conditions on the intended stepper motor!