Metalfab Industrial Electric Vibrator - Manual (Page 14)

Metalfab, Inc. M3258-09/08
10
Electric Vibrators
Bearing Replacement and Tear Down
WARNING
!
Before any adjustments vibrator should be electrically
"locked out."
All assembly/disassembly work must take place in a very clean environment
to avoid any contamination to the bearings. Always replace the grease seals
when bearings are replaced. Use only the recommended bearings and grease
as described in the “Lubrication” section of this manual.
NOTE
These motors will produce bearing noise when they are run
without the eccentric weights. Please do not misconstrue this
bearing noise as necessarily meaning the bearings are bad. It
is simply due to the “loose” fit bearings used. However, when
the eccentric weights are attached and even a minimum of
centrifugal force is created, the bearings should quiet down. If
the bearings still make noise under load, it is evident there is a
damaged bearing.
Do not simply request a bearing by using its first few call numbers, but use the
complete call numbers. To be sure you receive the correct bearing, order it
from Metalfab, Inc. Use only FAG or SKF bearings.
Disassembly of
motor and
bearings You must first remove the weight covers and weights. Next, remove the four
bolts holding the bearing flange to the stator housing. Then introduce two
weight cover bolts into the small tapped holes just next to the four bearing
flange bolts. By tightening these two screws into the bearing flange, you will
press out the bearing flange from the stator housing.
NOTE
These small screws should be tightened evenly so as not to
bind the bearings on the shaft.
After the bearing flanges have been removed from the motor housing, you
may then remove the two aforementioned small screws from each bearing
flange and introduce them into the two small threaded holes that exist in the
bearing flange next to the bearing. Again, screw the two screws into the
bearing housing with even pressure to prevent binding of the bearing in the
bearing flange. If the bearing requires additional thread engagement for
removal, use a spacer or stack of washers for this purpose.
Next, it is necessary to remove the inner races of the bearing from the shaft. A
bearing puller will be required for this operation. Heat may be applied to the
inner race of the bearing to facilitate its removal from the shaft. If heat is
applied to the inner race, the bearing must be discarded.