Siemens SIMOGEAR BA 2330 - Thread Sizes and Tightening Torques for Fastening Bolts; Inspection of the Motor; Servicing the Brake; Wear of Spring-Operated Brakes

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 coe󹪟cient of μ=0.14.
Table 10-4 Tightening torques for 󹪝xing screws
Thread size Tightening torque for property class
8.8 10.9 12.9
Nm Nm Nm
M4 3 4 5
M5 6 9 10
M6 10 15 18
M8 25 35 41
M10 50 70 85
M12 90 120 145
M16 210 295 355
M20 450 580 690
M24 750 1000 1200
M30 1500 2000 2400
M36 2500 3600 4200
10.7 Inspection of the motor
Check the motor in accordance with the criteria set out in Speci󹪝c 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 in󹪞uencing factors have to be quanti󹪝ed 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
Service and maintenance
10.8Servicing the brake
Motors for mounting onto SIMOGEAR gearboxes
Operating Instructions, 01/2024, A5E53220841A/RS-AA 95