Checking The Tightness Of Fastening Bolts - Siemens SIMOGEAR BA 2030 Operating Instructions Manual

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8.9

Checking the tightness of fastening bolts

Note
Replace damaged headless bolts with new bolts of the same type and strength class.
Switch off the power supply to the drive component. Check all fastening bolts for tightness
using a torque wrench.
The general tolerance for the tightening torque is 10%. The tightening torque is based on a
friction coefficient of μ = 0.14.
Table 8- 10
BA 2030 (2KJ4)
Operating Instructions, 07/2020, A5E50009094A/RS-AL
Tightening torques for fastening bolts
Thread size
M4
M5
M6
M8
M10
M12
M16
M20
M24
M30
M36
8.9 Checking the tightness of fastening bolts
Tightening torque for strength class
8.8
[Nm]
3
6
10
25
50
90
210
450
750
1500
2500
Service and maintenance
10.9
[Nm]
4
9
15
35
70
120
295
580
1000
2000
3600
12.9
[Nm]
5
10
18
41
85
145
355
690
1200
2400
4200
77

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