Thread Sizes And Tightening Torques For Fastening Bolts - Siemens SINAMICS G115D Operating Instructions Manual

Additional information on the SIMOGEAR geared motor
12.1 General information geared motor with SINAMICS G115D Motor Mounted / Wall Mounted
Maximum permissible radial vibration levels
Vibration frequency
< 6.3 Hz
6.3 Hz to 250 Hz
> 250 Hz
Maximum permissible axial vibration severity
Vibration velocity
Vibration velocity v
Resonant frequencies
Resonance can occur in the speed range of the geared motor depending on the machine to
be driven.
Operation in resonance causes increased noise and vibration levels.
Adherence to the maximum permissible vibration severity is always required.
Operation in the resonant frequency leads to a reduced service life of the geared motor,
irrespective of adherence to the maximum vibration severity.
Continuous operation in the resonant frequency must be avoided.
12.1.9

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 12-1
Thread size
M4
M5
M6
M8
M10
M12
M16
M20
M24
M30
M36
436
≤ 4.5 mm/s
rms
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
Vibration value
Vibration displacement
Vibration velocity v
Vibration acceleration a
Vibration acceleration
Vibration acceleration a
10.9
Nm
4
9
15
35
70
120
295
580
1 000
2 000
3 600
SINAMICS G115D Wall Mounted distributed drive
Operating Instructions, 07/2023, FW V4.7 SP14, A5E52808211A AA
≤ 0.16 mm
s
≤ 4.5 mm/s
rms
≤ 10 m/s
2
peak
≤ 10 m/s
2
peak
12.9
Nm
5
10
18
41
85
145
355
690
1 200
2 400
4 200