Screw Joints - ABB IRB 360-1/800 Product Manual

4 Repair

4.2.3 Screw joints

4.2.3 Screw joints
General
This section describes how to tighten the various types of screw joints on the IRB
360.
The instructions and torque values are valid for screw joints comprised of metallic
materials and do not apply to soft or brittle materials.
Gleitmo treated screws
Gleitmo is a special surface treatment to reduce the friction when tightening the
screw joint. Screws treated with Gleitmo may be reused 3-4 times before the coating
disappears. After this the screw must be discarded and replaced with a new one.
When handling screws treated with Gleitmo, protective gloves of nitrile rubber
type should be used.
Tightening torque
Before tightening any screw, note the following:
Oil-lubricated screws with slotted or cross-recess head screws
Oil-lubricated screws with allen head screws
The following table specifies the recommended standard tightening torque for
oil-lubricated screws with allen head screws.
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• 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 keys.
• Always tighten the joint by hand, and never use pneumatic tools.
• Use the correct tightening technique, that is do not jerk. Tighten the screw
in a slow, flowing motion.
• Maximum allowed total deviation from the specified value is 10%!
Note
A special torque specified in the repair, maintenance or installation procedure
overrides the standard torque.
Note
A special torque specified in the repair, maintenance or installation procedure
overrides the standard torque.
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Product manual - IRB 360
3HAC030005-001 Revision: U