Slew Drives
Installation and commissioning
32
The end customer or the operating company must be instructed
which tightening process was used. The process must also be
used when servicing the unit to check the bolted union.
Tightening torque M
A
in Nm with incremental tightening
Step 1
30%
Step 2
80%
Step 3
100%
Mounting bolt
dimensions
Tightening torque M
A
in Nm
Strength class 10.9
M6
3.50
9.20
11.5
M8
8.40
22.4
28.0
M10
16.7
44.6
55.8
M12
29.3
78.2
97.7
M16
73.8
197
246
M20
144
385
481
M24
249
664
830
M30
498
1329
1661
Tab. 12
Tightening torque M
A
in Nm with incremental tightening
Step 1
30%
Step 2
80%
Step 3
100%
Mounting bolt
dimensions
Tightening torque M
A
in Nm
Strength class SAE Grade 8
1/4 - 20 UNC
3.50
9.30
11.6
5/16 - 18 UNC
7.30
19.4
24.3
3/8 - 16 UNC
13.1
34.9
43.6
7/16 - 14 UNC
21.1
56.2
70.2
5/8 - 11 UNC
64.4
172
215
3/4 - 10 UNC
115
308
385
7/8 - 9 UNC
187
498
622
1 1/8 - 7 UNC
397
1060
1324
Tab. 13
