Bolt, Screws, Tightening Torques - ABB FlexPLP IRPLP 220 Product Manual

9.3 Bolt, screws, tightening torques

Bolt and screws
Before tightening any screw or bolt, observe the following:
Standard tightening torques
The following table specifies the recommended standard tightening torques for
hex screws and socket head hex screws:
Screw thread size
Tightening torque
CLASS 8.8
Tightening torque
CLASS 10.9
Tightening torque
CLASS 12.9
The following table specifies the recommended standard tightening torque for
water and air connectors when one or both connectors are made of brass:
Dimension (unit: inch)
1/8
1/4
3/8
1/2
3/4
Product manual - FlexPLP IRPLP 220
3HAW050041018-001 Revision: C
• Determine whether a standard tightening torque or special torque is to be
applied. The standard torques are specified in the following tables. Any
special torques are specified in the repair, maintenance or installation
procedure descriptions. Any special torque specified overrides the standard
torque! Use the correct tightening torque for each type of screw joint.
• Only use correctly calibrated torque wrench.
• Always tighten the joint by hand, and never use pneumatic tools.Use the
correct tightening technique, tighten the screw in a slow, flowing
motion.Maximum allowed total deviation from the specified value is 10%!
Note
Unless indicated otherwise, the bolts used on (or provided with) the FlexPLP are
of class 8.8.
Note
Unless indicated otherwise, all bolts must be free of oil or grease and tightened
with a mild thread-locker such as Loctite 243.
M5
5.5 Nm
8.1 Nm
9.5 Nm
Tightening torque
Nm - Nominal
12 Nm
15 Nm
20 Nm
40 Nm
70 Nm
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9 Reference information
9.3 Bolt, screws, tightening torques
M6 M8
9.5 Nm 23 Nm
14 Nm 34 Nm
16.4 Nm 40 Nm
Tightening torque
Nm - Minimal
8 Nm
10 Nm
15 Nm
30 Nm
55 Nm
M10 M12
46 Nm 79 Nm
67 Nm 116 Nm
79 Nm 136 Nm
Tightening torque
Nm - Maximum
15 Nm
20 Nm
25 Nm
50 Nm
90 Nm
133