Checking The Tightness Of Fastening Bolts; Replacing The Hose Of The Oil Expansion Unit - Siemens SINAMICS G115D Operating Instructions Manual

11.3.29

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 unit. Check all fastening bolts for tightness using a
torque wrench.
The general tolerance for the tightening torque in Nm is 10 %. The friction coefficient is
0.14 μ.
Table 11- 50 Tightening torques for fastening bolts
Thread size
M4
M5
M6
M8
M10
M12
M16
M20
M24
M30
M36
11.3.30

Replacing the hose of the oil expansion unit

NOTICE
Hose with leaks
The hose of the oil expansion unit is subject to natural wear. The service life depends on the
operating conditions.
Check the hose regularly for tears or leaks.
Renew the hose every 4 years at the latest.
SINAMICS G115D distributed drive
Operating Instructions, 09/2020, FW V4.7 SP13, A5E48681219B
Additional information on the SIMOGEAR geared motor
Tightening torque for strength class
8.8
[Nm]
3
6
10
25
50
90
210
450
750
1 500
2 500
11.3 Specific data gearbox
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
447