6.6 Lubricate Rotor Bearings
The bearings are factory lubricated with a lithium or
lithium complex base grease which is suitable for most
applications. Select a grease that is compatible with a
lithium or lithium complex grease.
The bearings should contain as much grease as
speed will permit. A full bearing with consequent slight
leakage through the seal is the best protection against
contaminant entry.
Extreme situations may require a change in lubricating
periods as dictated by experience.
Generally, a lower quantity of grease at frequent
intervals is more effective than a greater quantity at
extended lubrication intervals.
Typical lubrication quantity is 1 pump from a standard
grease gun every 250 hours of use.
In the higher speed ranges too much grease will cause
overheating. The amount of grease that the bearing
will take for a particular high speed application can be
determined only by experience. If excess grease in
the bearing caused overheating, it will be necessary
to remove grease fitting to permit excess grease to
escape.
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