● Remove any mounted components and instruments at the DE and NDE:
– Unscrew the grease removal valve.
– Unscrew the relubrication tubing.
– Unscrew the bearing PT100 and the installation tube.
– Unscrew the shock pulse measurement locations with pipe.
● Depending on the particular version, there could also be a sound absorber, air inlet shroud
and fan; also remove these.
For a schematic diagram of the respective component layout, see the chapter "Spare parts
(Page 109)".
Procedure
1. Remove the bearing mounting components.
– Remove the outer bearing cover if one is being used.
Remove the sealing ring (Page 104).
If there is a labyrinth sealing ring, then also remove this.
– Ensure that the inner bearing cover is no longer attached to the bearing housing or end
shield.
– Support the rotor for the removal of bearing housing or end shield.
– If necessary, remove the bearing housing from the end shield.
– Remove the end shield. Depending on the shaft height, rolling bearing type and design,
it is either a bearing head version or a bearing housing version.
– Remove the locking elements from the shaft; depending on the version, either a locking
ring or shaft nut.
2. Remove the rolling bearing: Depending on the particular version, together with the grease
slinger or without.
9.2.3.2 Removing the labyrinth sealing ring
The labyrinth ring must be removed before the roller bearing on the drive end can be removed:
Note
Only one labyrinth ring is present on the non-drive end if the motor has a second shaft end.
Apply a protective coating to the shaft in front of and underneath the labyrinth ring to prevent
corrosion. The two set screws are separably with cement such as Loctite 243.
Maintenance
9.2 Corrective Maintenance
SIMOTICS HV M 1RN76308PR900CG0-Z
Operating Instructions 07/2018 103
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