ABB IRB 920 Product Manual page 643

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Product manual - IRB 920
3HAC075721-001 Revision: C
Action
CAUTION
For robots with protection type Clean Room
Always cut the paint with a knife and grind the
paint edge when disassembling parts of the robot!
See Cut the paint or surface on the robot before
replacing parts on page 118.
DANGER
Make sure that the ball screw is supported with
something.
The sudden drop of the ball screw due the lost of
the axis-3 motor may cause danger.
Hang a strong strap to the motor.
Use 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.
Fasten the screws on the transmission module to
the recommended tightening torque.
Use a sonic tension meter to measure the timing
belt tension.
If the timing belt tension does not meet the require-
ment, loosen the motor screws and readjust.
© Copyright 2022 ABB. All rights reserved.
5.6.10 Replacing the transmission module
Note
Used belt: 100
New belt:240
xx2100001127
Tightening torque: 2.6 Nm ±10%
xx2100001087
Used belt: 202
New belt:180
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5 Repair
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