General Procedures; Mounting Instructions For Bearings - ABB IRB 140 Product Manual

4 Repair

4.2.1 Mounting instructions for bearings

4.2 General procedures

4.2.1 Mounting instructions for bearings
General
This section describes how to mount and grease different types of bearings on the
robot.
Equipment
Equipment, etc.
Grease
Assembly of all bearings
Follow the following instructions while mounting a bearing on the robot.
1
2
3
Assembly of tapered bearings
Follow the preceding instructions for the assembly of the bearings when mounting
a tapered bearing on the robot.
In addition to those instructions, the following procedure must be carried out to
enable the roller elements to adjust to the correct position against the race flange.
1
2
Greasing of bearings
The bearings must be greased after assembly according to the following
instructions:
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Action
To avoid contamination, let a new bearing remain in its wrapping
until it is time for fitting.
Ensure that the parts included in the bearing fitting are free from
burrs, grinding waste, and other contamination. Cast components
must be free of foundry sand.
Bearing rings, inner rings, and roller elements must not be subjec-
ted to direct impact. The roller elements must not be exposed to
any stresses during the assembly work.
Action
Tension the bearing gradually until the recommended pre-tension is achieved.
Note
The roller elements must be rotated a specified number of turns before pre-
tensioning is carried out and also rotated during the pre-tensioning sequence.
Make sure the bearing is properly aligned as this will directly affect the durab-
ility of the bearing.
• The bearings must not be completely filled with grease. However, if space
is available beside the bearing fitting, the bearing may be totally filled with
grease when mounted, as excessive grease will be pressed out from the
bearing when the robot is started.
© Copyright 2004-2013 ABB. All rights reserved.
Art. no. Note
3HAB3537-1 Used to grease the bearings, if not
specified otherwise.
Note
Note
3HAC027400-001 Revision: K