Page
37
of
54
Maintenance and servicing
11.6
Screw fittings
Check bolts and nuts for tightness after five hours of operation for the first time,
then regularly (every 50 hours) and retighten if necessary.
•
All torques T
A
are standard values for standard metric threads according to DIN.
Coefficient of friction 0.14 - new screws - unlubricated. These values have been
recommended as standard values by various screw manufacturers. We cannot
assume any liability for the application.
•
Self-locking nuts must be replaced after each disassembly.
Thread
3.6
5.6
6.8
8.8
10.9
12.9
M6
3.43
4.51
8.73
10.3
14.71
17.65
M8
8.24
10.79
21.57
25.50
35.30
42.17
M10
16.67
21.57
42.17
50.01
70.61
85.32
M12
28.44
38.25
73.55
87.28
122.58
147.10
M14
45.11
60.80
116.70
135.27
194.17
235.36
M16
69.63
93.16
178.46
210.84
299.10
357.94
M18
95.13
127.40
245.17
289.30
411.88
490.34
M20
135.33
180.44
348.14
411.88
576.50
669.26
M22
162.40
245.17
470.72
558.98
784.45
941.44
