5.3
Design, task and function of the assembly groups and components
NOTE
Component designations and item numbers can be obtained from the section “Designation of the as-
sembly groups and components”, see section 5.2.
Design
The brake is a pressure-operated spring pressure multi-disc brake, which transmits the brake torque from inner
body (1) to outer body (3) via frictional engagement between the inner discs (5) and outer discs (6). The com-
pletely assembled brake is screwed together to the mating part of the customer's machine with screws (12). The
inner body (1) is connected to the hydraulic motor to be braked by means of a parallel key or splined shaft pro-
file.
Mode of function
• Releasing the brake (via pressurised medium):
By supplying pressurised medium through the pressure line connection (D) in the piston chamber, see sec-
tion 5.3.1, the piston (2) moves in axial direction up to the stop against the disc (21) or the cylinder cover (4).
The inner discs (7) and the outer discs (8) do not form a non-positive connection and the brake is released.
• Engaging the brake (using spring force):
In the event of pressure loss (generated by the pressurised medium), the piston (2) is depressed in the direction
of the discs by the spring force of the pressure spring (7)/(8) and therefore presses the inner discs (5) and outer
discs (6) together. This produces a friction locking connection, transmitting braking torque to the machine ele-
ment to be operated. The brake is engaged.
NOTE
The specified brake torque is achieved only with the pressure line in depressurised condition and the
brake intact.
5.3.1
Supply connections
SKB-0401
D
L
DD-_771060-000 / Fig. 8
The brakes are provided with a pressure pipe connection (D) and if necessary, a leak line connection (L).
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Mounting instructions Pressure-operated spring-actuated multi-disc brake KMB-ZM, KLB-ZM • No. 777-00001 D • 10/2017
