Hydraulic Motors

Multi-Disc Hydraulic Brakes

Spring-applied, pressure-released parking brakes from 200 to 42,000 N·m

Normally closed wet multi-disc brakes: springs clamp the disc stack and hydraulic pressure on the release port frees the shaft, so the load is held whenever pressure is lost. Standalone flange-mounted brakes fit between an orbital motor and the driven shaft, and rear-mounted brake modules fit cam-lobe motors. They are intended for static (parking) holding; motor-mounted modules also allow a limited number of emergency stops.

Typical specifications

Static (parking) torque: 200 – 42,000 N·m
Dynamic emergency torque: 910 – 27,300 N·m (motor-mounted modules)
Min. full-release pressure: 1.2 – 2.3 MPa
Max. pressure on release port: 3 MPa (motor-mounted modules); 30 MPa (standalone brake)
Release oil volume: 7 – 135 cm³
Weight: 4.4 – 98 kg

Ranges across the product family. Exact figures depend on the model.

Options

Standalone flange brake with keyed or splined input bore and output shaft
Rear-mounted brake module for cam-lobe motors, with mechanical emergency release
Orbital motor with built-in brake
Four drain-port positions for flexible installation