Technical data
B.1 Tightening torques
1MB..1/2/3/4 - shaft heights 63 ... 355
162
Operating Instructions, 06/2020, A5E44455710A
B.1.2
Stud-type bushings
Table B- 2
Tightening torques for stud-type bushings
Thread
∅
M 4
M 5
M 6
M 8
M 10
M 12
M 16
M 20
Nm
Min.
1
1.6
2.5
5
8
13
25
42
Max.
1.2
2
3
6
10
15.5
30
52
B.1.3
Terminal boxes, end shields, grounding conductors, sheet metal fan covers
If no other tightening torques are specified, then the values in the following table apply.
Table B- 3
Tightening torques for screws on the terminal box, end shields, screw-type grounding conductor connections
Thread
∅
M 3.5
M 4
M 5
M 6
M 8
M 10
M 12
M 16
M20
Nm
min
0.8
2
3.5
6
16
28
46
110
225
max
1.2
3
5
9
24
42
70
165
340
Tightening torque for the condensation drain plug
Tighten the condensation drain plug M6x0.75 with a torque between 1.5 and 2.0 Nm.
B.1.3.1
Terminal board and grounding
Table B- 4 Tightening torques for electrical connections on the terminal board and grounding
Thread
∅
M 3.5
M 4
M 5
M 6
M 8
M 10
M 12
M 16
Nm
min
0.8
0.8
1.8
2.7
5.5
9
14
27
Max.
1.2
1.2
2.5
4
8
13
20
40
B.1.4
Additional connecting terminals for monitoring equipment and anti-condensation
heating
Table B- 5
Tightening torques for monitoring equipment and anti-condensation heating
Main terminal box
EN 60999-1: 2000 table 4 III
0.4 Nm
Auxiliary terminal box
min 0.6 Nm
max 0.8 Nm
