ABB IRB 2000 - Page 21

11
12
13.
The
bearings
shall
not
be
completely
filled
with
grease.
If
space
is
available
besides
the bearing fitting, the bearing may be totally filled with grease when mounted, as
surplus grease will be thrown out from the bearing at starting up.
The
bearing
shall
during
operation
be
filled
to
70-80
%
of
the
available
volume.
Ensure
that
the
grease
is
handled
and
kept
properly
to
avoid
contamination.
1.4.2 Sealings
1. The usual cause of leakage is an incorrect mounting.
Rotating Sealings
2. The sealing surfaces shall be protected during transport and mounting.
3. The sealings shall remain in the original wrappings or be kept well protected.
4. Sealling surfaces shall be inspected before mounting. Should scratches or damages
be found, that may result in future leakage, the seal shall be replaced.
5. Also the sealing shall be checked before mounting to ensure that:
there’s no damage to the sealing edge (feel with a finger nail)
e the sealing is of correct type (provided with cut-off edge)
¢ there’s no other damages.
6. Grease the sealing just before the mounting shall take place, not too early as there’s
a risk for adhesion of dirt and foreign particles to the sealing. The space between
dust tongue and sealing lip shall be filled to 2/3 with grease of quality 1171 4012-
201. Also the rubber coated external diameter shall be greased.
7. Mounting of sealings and gears has to be carried out on clean work benches.
8. Mount the sealing correctly, if mounted misaligned, there’s a risk for leakage due to
the pumping effect.
9. Always mount the sealing with a mounting tool. Never hammer directly on the
sealing, as this will result in leakage.
10. Use protective sleeve for the sealing edge during the mounting, when sliding over
threads, key-ways etc.
Flange Sealings and Static Sealings
11. Check the flange surfaces. The surfaces must be even and free from pores. The
check of the plainness is easily carried out with a gauge on the fastened joint
(without sealing compound).
12. Differences in level or presence of burrs, due to incorrect machining, is not allowed
of the surfaces. Should the flange surfaces be defect, the parts are not to be used, as
a mounting of defect surfaces will result in a leakage.
13. The surfaces shall be properly cleaned in accordance with ABB ROBOTICS*
recommendations.
14. Distribute the sealing compound evenly over the surface, preferrably with a brush.
Mechanical repair IRB 2000