Mounting the coupling
32
Torques for tightening bolted connections
A cordless screwdriver may be used to screw the bolts in hand-tight. The
required torque must only be applied by hand using a torque wrench.
To ensure reliable torque transmission, all bolts must be tightened to the required
torque during assembly. For tightening, use a calibrated torque wrench which is
suitable for the required torque.
The following torques apply as standard unless otherwise specified in the
relevant design drawing.
The following values apply to slotted headless bolts with metric thread and head
contact in accordance with (ISO 4762, ISO 4014, DIN 6912) and a total friction factor
μ=0.14.
Bolt size
Torque [Nm]
Strength grade
8.8
10.9
M6
10
14
M8
25
35
M10
49
69
M12
86
120
M14
135
190
M16
210
295
M18
290
405
M20
410
580
M22
550
780
M24
710
1,000
M27
1,056
1,500
M30
1,450
2,000
Содержание MMS-T W Series
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