Table of Contents
Advertisement
Tightening torque
Before tightening any screw, note the following:
The table below specify the recommended standard tightening torque for oil-lubricated
screws with slotted or cross-recess head screws.
Dimension
The table below specify the recommended standard tightening torque for oil-lubricated
screws with Allen head screws.
Dimension
M5
M6
M8
M10
M12
M16
3HAC021111-001 Revision: B
•
Determine whether a standard tightening torque or special torque is to be applied. The
standard torques are specified in the tables below. Any special torques are specified in
the Repair, Maintenance or Installation procedure description. Any special torque
specified overrides the standard value.
•
Use the correct tightening torque for each type of screw joint.
•
Only use correctly calibrated torque keys.
•
Always tighten the joint by hand, and never use pneumatical tools
•
Use the correct tightening technique, i.e. do not jerk. Tighten the screw in a slow,
flowing motion.
•
Maximum allowed total deviation from the specified value is 10%!
Tightening torque (Nm)
Class 4.8, oil-lubricated
M2.5
0.25
M3
0.5
M4
1.2
M5
2.5
M6
5.0
Tightening torque
(Nm)
Class 8.8, oil-
lubricated
6
10
24
47
82
200
8 Reference information, IRB 1400
Tightening torque
Tightening torque
(Nm)
(Nm)
Class 10.9, oil-
Class 12.9, oil-
lubricated
lubricated
-
-
-
-
34
40
67
80
115
140
290
340
8.0.4 Screw joints
151
Advertisement
Table of Contents
