ABB IRB 6640 Foundry Prime Product Manual page 147

Check the o-rings in the front ear of the balancing device for leaks, as shown and
detailed below.
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A
B
C
D
1
2
3
Check for leakage - Design 2
The front ear of the balancing device is lubricated with grease.
Leaks at o-rings, sealings etc. are not acceptable and must be attended to
immediately to avoid damage to the bearing.
Product manual - IRB 6640 Foundry Prime
3HAC040586-001 Revision: N
Shaft
Sealing ring (radial) 2 pcs
O-ring
Sealing spacer
Action
Clean the area at the front ear from old grease.
Run the robot for some minutes, in order to
move the balancing device piston.
Check the o-rings at the front ear for leakage.
Replace the o-rings, if any leaks are detected.
Excessive grease from between the shaft and
the sealing ring is normal and is not considered
as a leak!
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3 Maintenance
3.3.7 Inspecting the balancing device
Note
The o-rings are included in the Main-
tenance kit, bearings and seals,
already assembled with sealing
spacers and sealing rings.
Art. no. for the kit is specified in
quired equipment on page
The replacement of the complete
bearing is also detailed in section
Replacement of spherical roller bear-
ing, balancing device on page
Continues on next page
Continued
Re-
145.
297.
147