CAUTION
For the robots with protection type Clean Room and protection class IP54, the
ball screw spline unit is inside the bellows. If needed, remove the bellows to
inspect the ball screw spline unit.
For details about how to remove the bellows, see Replacing the bellows.
Required spare parts
Note
The spare part numbers that are listed in the table can be out of date. See the
latest spare parts of the IRB 920 via myABB Business Portal,
www.abb.com/myABB.
NoteArticle numberSpare part
Used for IRB 920T-6/0.45_0.18,
IRB 920T-6/0.55_0.18 and IRB
920T-6/0.65_0.18
3HAC070477-001Ball screw, BNS2020A+395LC5
Used for IRB 920T-6/0.45_0.3,
IRB 920T-6/0.55_0.3 and IRB
920T-6/0.65_0.3
3HAC072983-001Ball screw, BNS2020A+515LC5
Used for IRB 920T-6/0.45_0.18,
IRB 920T-6/0.55_0.18 and IRB
920T-6/0.65_0.18
3HAC070479-001Ball Screw Flange
With bolt3HAC073068-001Mechanical-Stop top, D20
With bolt3HAC073069-001Mechanical-Stop bottom, D20
Required tools and equipment
NoteArticle numberEquipment
Content is defined in section
Standard toolkit on page 996.
-Standard toolkit
Used to install the ball screw nut.
Special tool for L2
3HAC077249-001IRB 920 special tool
Delivered as a set of calibration
tools.
Required if Axis Calibration is the
valid calibration method for the
robot.
3HAC055412-001Calibration toolbox, Axis Calibra-
tion
Used to release the motor brakes.-24 VDC power supply
Used for measuring the timing
belt tension.
-Sonic tension meter
Used for measuring the timing
belt tension.
-Handheld dynamometer
Continues on next page
Product manual - IRB 920 489
3HAC075721-001 Revision: C
© Copyright 2022 ABB. All rights reserved.
5 Repair
5.6.5 Replacing the ball screw
Continued
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