Grease
Seals
 The grease seals are pressed into the cup counterbores
on both ends. The function of the grease seal is as follows:
1. Allow rotating and non-rotating components to move relative
to each other.
2. Retention of grease in the bearing.
3. Exclude contaminants such as water, dirt and road grime.
The seal and grease work in combination to protect the bearing
and should be looked at as a system. Special attention must be
given to apply the best seal and grease combination for a particular
application due to environmental considerations. These include
temperature extremes, existence of free dust and dirt, extreme
loading, and speed of operation. |
