ABB IRB 120 - Page 206

InformationAction
Make sure that:
• all assembly surfaces are clean and
without damages
• motor and gearbox are clean and
undamaged.
2
Place the axis-3 motor in the motor cover.3
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Refit the timing belt on the pulleys.4
Parts:
• A: Timing belt
• B: Pulleys (2 pcs)
Tighten the attachment screws and washers
securing the motor, just enough to still be
able to move the motor.
5
New belt: F = 18-19.7NMove the motor to a position where a good
timing belt tension is reached.
Tip
Use a handheld spring balance to measure
the timing belt tension.
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6
Used belt: F = 12.5-14.3N
Note
Do not strech the timing belt too much!
Tightening torque: 4 Nm.Secure the axis-3 motor with its attachment
screws and washers.
7
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206 Product manual - IRB 120
3HAC035728-001 Revision: N
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4 Repair
4.7.3 Replacing axis-3 motor with gearbox
Continued