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10.6
Thread sizes and tightening torques for fastening bolts
The general tolerance for the tightening torque is 10%. The tightening torque is based on a
friction coefficient of μ = 0.14.
Table 10-4
Thread size
M4
M5
M6
M8
M10
M12
M16
M20
M24
M30
M36
10.7
Inspection of the motor
Check the motor in accordance with the criteria set out in Specific safety instructions (Page 25).
Touch up damaged paintwork carefully.
10.8
Servicing the brake
Note
When using a safe holding brake (LS brake), for maintenance, carefully comply with BA
2332 ‑ Geared motor with holding brake for safety-related applications.
10.8.1
Wear of spring-operated brakes
The friction lining and the mechanical components of the brake are subject to wear due to their
inherent function. For safe and fault-free operation, brakes must be checked, adjusted or
replaced at regular intervals.
The important influencing factors have to be quantified in order to calculate the service life
of the rotor and the brake and determine the stipulated maintenance intervals. Here, the
most important factors are the work as a result of the frictional force, the speed at the start
Motors for mounting onto SIMOGEAR gearboxes
Operating Instructions, 01/2024, A5E53220841A/RS-AA
Tightening torques for fixing screws
Tightening torque for property class
8.8
Nm
3
6
10
25
50
90
210
450
750
1 500
2 500
Service and maintenance
10.8 Servicing the brake
10.9
Nm
4
9
15
35
70
120
295
580
1 000
2 000
3 600
12.9
Nm
5
10
18
41
85
145
355
690
1 200
2 400
4 200
95
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