NoteAction
Timing belt A3:Refit the timing belt to the pulley on the ball screw
and the motor. Ensure that the belt runs correctly
in the grooves.
2
3HAC070464-001
xx2100001079
Screws: Hex socket head cap
screw M4x16 12.9 Lafre
2C2B/FC6.9 (4 pcs)
Secure the screws and washers without fully
tightened.
3
Washers: Plain washer machining
4.2x9x2 steel (4 pcs)
Tightening torque: 2.6 Nm ±10%
xx2100001078
Hang a strap to the hook on the motor.4
Used belt: 36.6Use a handheld dynamometer hooking to the strap
and pull the dynamometer to make the tension
falling in the allowed force range.
Note
During the measurement, make sure that all inter-
ferences that may affect the force are removed.
Pay attention to the force application direction.
5
New belt:40
xx2100001126
Used belt: 139Use a sonic tension meter to measure the timing
belt tension.
6
New belt:110
If the timing belt tension does not meet the require-
ment, loosen the motor screws and readjust.
7
Continues on next page
Product manual - IRB 920 595
3HAC075721-001 Revision: C
© Copyright 2022 ABB. All rights reserved.
5 Repair
5.6.8 Replacing the axis-4 second timing belt
Continued
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