ABB OmniCore IRB 6720, Product Manual

Page: 109 / 640

Required consumables and wear parts
Note Article number Wear part
The maintenance set contains:
• radial sealing with dust lip, 2 pcs
• groove ball bearing complete, 2
pcs
• retaining ring, bore, 2 pcs
• VK-cover, 2 pcs (3HAA2166-13)
3HAC087164-001 Maintenance set cradle
The maintenance kit contains:
• End cover
• Radial sealing with dust lip, (2
pcs)
• O-ring
• Spherical roller bearing
• Washer
3HAC087168-001 Maintenance set, link ear
Check for dissonance
The check points are shown in the figure Inspection points, balancing device on
page 108 .
Action Check points
If dissonance is detected, perform maintenance accord-
ing to maintenance kits and instructions in section
Re-
placing spherical roller bearing, balancing device link
ear on page 212
and Replacing the rear bearings on the
balancing device on page 227 .
Check for dissonance from
the bearing at the link ear
and the bearings at the rear
attachments. 1
If dissonance is detected, replace the balancing device
or consult ABB Service. Check for dissonance from
the balancing device (a tap-
ping sound, caused by the
springs inside the cylinder). 2
How to replace the device is detailed in section Repla-
cing the balancing device on page 194 . This section also
specifies the spare part number.
If dissonance is detected, wipe clean the piston rod. Check for dissonance from
the piston rod (squeaking
may indicate worn plain
bearings, internal contamin-
ation or insufficient lubrica-
tion). 3
If dissonance continues after the piston rod is cleaned,
perform maintenance according to given instructions in
the maintenance set.
Check for damage
Check for damage, such as scratches, general wear, uneven surfaces or incorrect
positions.
The check points are shown in the figure Inspection points, balancing device on
page 108 .
Action Check points
If damage is detected, perform mainten-
ance according to given instructions in
Maintenance kit, complete. Check for damage on the part of the pis-
ton rod that is visible at the front of the
balancing device. 1
Continues on next page
Product manual - IRB 6720 109
3HAC085697-001 Revision: C
© Copyright 2023 ABB. All rights reserved.
4 Maintenance
4.3.2 Inspecting the balancing device
Continued