3.6 Lubrication

Lubricants reduce the static and dynamic coefficients of friction and permit materials to operate at higher PV’s than without lubrication. While most plastics do not require lubrication, some type of lubricant will generally enhance bearing performance. In many cases, water will provide sufficient lubrication and cooling during bearing operation. At the time a plastic bearing is installed, it is a good idea to apply a light film of grease on the ID of the bearing prior to mounting on the shaft.

The effect of lubrication on the factor of a particular material (in this case, Oilon PV–80) is shown on the following graph:

(A) — low wear region, no external lubrication required
(B) — low wear region, initial external lubrication recommended
(C) — feasible for Oilon with testing. External lubrication required.

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