ABB IRB 6640 - 180/2.55 Product Manual page 394

7 Reference information
7.4. Screw joints
Continued
Dimension
M16
M24
The table below specifies the recommended standard tightening torque for water and air
connectors when one or both connectors are made of brass.
Dimension
1/8
1/4
3/8
1/2
3/4
392
Tightening torque (Nm)
Class 10.9, Molycote-lubricated
235
790
Tightening torque
Nm - Nominal
12
15
20
40
70
Tightening torque (Nm)
Class 12.9, Molycote-lubricated
280
950
Tightening torque
Nm - Min.
8
10
15
30
55
3HAC026876-001 Revision: C
Tightening torque
Nm - Max.
15
20
25
50
90