Alfa Laval MMPX 303SGP-11, Manual

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5.10 General directions
5.10.1 Ball and roller bearings
Specially designed bearings for the bowl
spindle
The bearings used for the bowl spindle are
special to withstand the speed, vibration,
temperature and load characteristics of high-
speed separators.
Only Alfa Laval genuine spare parts should be
used.
A bearing that in appearance looks equivalent to
the correct may be considerably different in
various respects: inside clearances, design and
tolerances of the cage and races as well as
material and heat treatment.
Dismantling
Remove the bearing from its seat by using a
puller. If possible, let the puller engage the inner
ring, then remove the bearing with a steady force
until the bearing bore completely clears the entire
length of the cylindrical seat.
The puller should be accurately centered during
dismantling; otherwise it is easy to damage the
seating.
NOTE
Using an incorrect bearing can cause a
serious breakdown with injury to personnel
and damage to equipment as a result.
Do not re-fit a used bearing. Always replace
it with a new one.
NOTE
Do not hit with a hammer directly on the
bearing.
G
0
58
73
2
1
1. Outer race
2. Ball/roller
3. Inner race
4. Cage
G
0
587
41
1
For bearings where no driving-off sleeve is included in
the tool kit, use a puller when removing bearings
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