REXROTH MCR-C User Manual

Bosch Rexroth AG, RE 15197/02.2017
4 MCR-C | Radial piston motor for compact drives
Functional description
Holding brake (multi-disc brake)
Mounting
By way of rear housing (2) and brake shaft (14).
Brake application
As a safety requirement in mobile applications a parking
brake may be provided to ensure that the motor cannot
turn when the machine is not in use. The parking brake
provides holding torque by means of discs (11) that are
compressed by a disc spring (10). The brake is released
when oil pressure is applied to brake port “Z” and the
pressure in the annular area (9) compresses the disc spring
using brake piston (12) thus allowing the brake discs (11)
to turn independently.
Notice
Brakes not for dynamic use!
▼ Schematic diagrams
Motor
without brake
Motor
with holding brake
A
B
L
Z
A
B
L
Manual release of holding brake
The brake may also be released manually by loosening
screws (13).
2
9
12
10
13
11
14
Speed sensor
A Hall-eff ect speed sensor (16) may be fi tted as an option,
giving a two-channel output of phase-displaced square
waves, and enabling detection of speed and direction. A
toothed target disc (17) is fi tted to the motor cylinder block
(4), and the sensor, fi tted to a port in the rear case, pro-
duces a pulse on each channel as each tooth passes in
front of it. The frequency of the pulses is proportional to
the rotational speed.
Versions are available for use with regulated supplies 10 V
(CodeP1) and for direct connection to a 12V or 24V
unregulated supply (CodeP2).
The motor can also be supplied fi tted with a target disc and
with a speed sensor port machined, but covered and sealed
with a blanking plate (CodeP0). These “sensor-ready”
motors may be fi tted with a sensor at a later date.
17
16
4
Direction of shaft rotation with fl ow
(viewed from drive shaft)
Port A
Port B

REXROTH MCR-C Specifications

General

Brand	REXROTH
Model	MCR-C
Category	Engine
Language	English