10 Reference Information
10.4 Tightening Torques
216 3HNA009834-001 en Rev.06 Product Manual, Control Cabinet IRC5P
10.4 Tightening Torques
General All screws on the robot except screws for covers and adjusting screws should be
tightened with torque according to the tables below unless otherwise specified.
Galvanized screws are of 8.8 quality and untreated screws (black oxide) are of 12.9
quality. Torques apply to lightly lubricated screws.
Torque Tables for
Screws with Hexagon
Socket Heads
The table below shows tightening torques for screws used
Torque Table for Slotted
or Cross Recessed
Head
The table below shows tightening torques to be used for electrical connections,
terminal board screws etc.
Table 1
Screw quality
Nominal Diameter 8.8
Nm
12.9
Nm
M4 2.9 4.9
M5 5.9 10.0
M6 9.9 16.5
M8 24.0 40.0
M10 47.0 79.0
M12 82.0 140.0
M14 130.0 220.0
M16 200.0 340.0
Table 2
Nominal
Diameter
Tightening torque - Nm
class 4.8 “Dry”
M 2.5 0.25
M 3 0.5
M 4 1.2
M 5 2.5
M 6 5.0
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