NoteAction
Screws: Hex socket head cap
screw M5x12 12.9 Lafre
2C2B/FC6.9 (6 pcs)
Refit the pulley to the ball screw carefully.
CAUTION
If the ball screw nut or ball screw spline nut go
out of the screw shaft, the ball screw is destroyed.
Be careful when you do any work that may cause
this.
3
Washers: Spring washer 9x4.3x1
Steel (6 pcs)
Tightening torque: 4.4 Nm ±10%
xx2100001085
Refit the screws.
Tip
Secure with the stopping tool to prevent the pulley
from rotating.
4
Refitting the axis-4 second timing belt to the pulley
NoteAction
For robots with protection type Clean Room:1
Clean the joints that have been opened and wipe
the parts free from particles with spirit on a lint
free. See Cut the paint or surface on the robot
before replacing parts on page 118
Note
After all repair work, wipe the Clean Room robot
free from particles with spirit on a lint free cloth.
Timing belt, A4-2:Refit the belt to the pulley.2
3HAC070471-001
xx2100001086
Ensure that the belt runs correctly in the grooves.
Continues on next page
470 Product manual - IRB 920
3HAC075721-001 Revision: C
© Copyright 2022 ABB. All rights reserved.
5 Repair
5.6.4 Replacing the pulley on the ball screw lower position
Continued
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