Rockwell Automation 1329L AC Induction Motors User Manual - Manual (Page 18)

18 AC Induction Motors
Use Chevron SRI-2 grease or equivalent unless motor nameplate
specifies special grease. Use only clean, fresh grease from clean
containers and handle carefully to keep it clean.
In general, mixing of greases is not recommended. If an
incompatible grease is used, the lube system must be repacked
completely with the new grease.
5. Wipe away any excess grease at the grease drain or relief and
replace drain plugs.
Repacking Bearings or Greasing New Bearings
When existing bearings have been completely cleaned of old grease
or when bearings are replaced, use this procedure for packing the
bearing.
1. Apply one bead of grease around the inboard side of the bearing,
between bearing and inner cap. Assure that grease adheres to
balls or rollers.
2. Apply one bead of grease around outboard side of bearing,
making sure grease adheres to balls or rollers.
3. Completely fill grease inlet and outlet passage holes with grease.
4. Fill outboard bearing cavity 60% to 90% full of grease.
5. If possible, rotate shaft of assembled machine at least three
revolutions by hand to distribute grease within bearings before
starting motor.
Bearings
Bearing housing designs provide protection to windings and interior
of machine by minimum grease leakage. They also provide good
protection against external contamination.
Various types of anti-friction bearings are used in the wide range of
frames as needed to meet specific load, speed and service
requirements.
Most commonly used bearings are:
• Single row, open ball bearings for coupled and belted duty for
frames L180 - L320.
• Single row, open ball bearings for coupled duty for frames L360
and L400.
• Cylindrical roller bearings at drive end for belted duty on frames
UL360 and UL400.