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3. Installation
3.1 Mechanical installation
Slip the hub (17) of the spring-applied single-disc brake on a shaft (tolerance
h6) provided with a feather key to DIN 6885, sheet 1. As the hub (17) is firmly
fitted to the brake, it need not be axially secured on the machine shaft (e.g.
motor shaft). Ensure that no radial forces act on the deep groove ball bearing
(18) during installation and operation (vertical installation, if possible) and that
the hub (17) is not exposed to any permanent axial force (e.g. exerted by shaft
shoulder) after installation has been completed. The spring-applied brake is
centred through the deep groove ball bearing (18) of the hub (17). Mounting
screws (10) are provided to attach the spring-applied single-disc brake to the
mounting surface (8) of the machine (e.g. motor). Before starting installation
work, insert the O-ring (16) into the groove provided in the solenoid housing
(1.1). Tighten the mounting screws (10) evenly in several steps and make
sure not to exceed the specified tightening torque (see Table 10/1).
Note!
Ensure that the deep groove ball bearing (18) is not distorted during
installation of the spring-applied single-disc brake and that the shaft rotates easily when the brake is released.
Check that there are no grinding sounds.
10
L [mm]
70
M
[Nm]
9.7
A
Table 10/1: Hub (17) dimensions; tightening torques for mounting screws (10)
Check that the mounting surface (8) meets the following requirements before installing the brake:
Axial runout relative to the shaft end to EN 50347
•
(measuring radius = hole circle)
•
Material: steel, aluminium, cast iron – with excellent thermal conductivity
Absence of oil and grease
•
Radial runout of the shaft end relative to the mounting surface (8) to EN 50347
Attention!
The specified axial runout of the mounting surface (8) relative to the shaft end and the specified radial runout
of the shaft end must be strictly observed in order not to reduce the reliability and service life of the spring-
applied single-disc brake. Before installing the brake, the shaft end must be slightly brushed with a high-
temperature grease (e.g. Copaslip). This is essential to facilitate brake removal if maintenance work needs to
be carried out at a later date.
Attention!
The M
tightening torque specified for the mounting screws (10) must be strictly observed. Tighten the
A
mounting screws (10) evenly in several steps.
Size
11
13
70
90
9.7
24
Operating Instructions BA 76..G..B00 // Last updated: 13/03/2020 // Page 10 of 34
16
19
90
100
24
45
24
100
45
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