4.4.4 Inspecting timing belts
Location of timing belts
The timing belts are located as shown in the figures.
Required tools and equipment
NoteEquipment
The content is defined in the section Stand-
ard toolkit on page 716.
Standard toolkit
Other tools and procedures may be required
if the spare part needs to be replaced. These
are specified in the replacement procedure.
Timing belt tension
The table describes the timing belt tension.
FrequencyForceAxis
New timing beltUsed timing belt
i
New timing beltUsed timing belt
i
87.8-92.1 Hz73.4-78.5 Hz43.1-47.4 N30.2-34.5 NAxis 3
209-219 Hz175-187 Hz23.9-26.2 N16.7-19.1 NAxis 4
70.8-74.3 Hz59.3-63.4 Hz13.8-15.2 N9.68-11.1 NAxis 5
102-107 Hz85.7-91.6 Hz12.6-13.8 N8.79-10.0 NAxis 6
i
Used belt is the one having been installed and used for more than 12 hours.
Compared with the new timing belt, the force value decreases 15% and the frequency value
decreases 28% when the timing belt has been installed and used for more than 12 hours but less
than 150 hours. When the timing belt has been installed and used for more than 150 hours, both
the force and frequency values decrease 30%.
Inspecting timing belts
Use this procedure to inspect timing belts.
InformationAction
DANGER
Turn off all:
• electric power supply
• hydraulic pressure supply
• air pressure supply
to the robot, before entering the robot
working area.
1
Gain access to each timing belt by removing
the cover.
2
Check the timing belts for damage or wear.3
Check the timing belt pulleys for damage.4
If any damage or wear is detected, the part
must be replaced!
5
Continues on next page
Product manual - CRB 1300 179
3HAC083111-001 Revision: B
© Copyright 2022-2023 ABB. All rights reserved.
4 Maintenance
4.4.4 Inspecting timing belts
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