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Bearings must be correctly lubricated to reduce friction between the rolling elements and raceways. Lubrication will minimise wear and protect bearing surfaces against corrosion. The choice of a suitable lubricant and method of lubrication is very important and depends upon the operating conditions (temperature, range, speeds, loads, environment). A wide variety of greases and oils is available offering solutions for all applications.


Oil lubrication is normally used where higher operating speeds are required as this offers more efficient heat dissipation.

The selection of a suitable viscosity grade is important to optimise the life and performance of bearings and adjacent components.

Filtration is strongly recommended as contaminated oil will have an adverse effect on bearing life and performance.

Regular inspection of oil and filters is advised and changes made when necessary.

Catalogue speed ratings are based on the use of oil lubrication


Grease lubrication offers a simplified and cost effective option as the lubricant is more easily retained within the bearing. It also eliminates the need for complicated and costly lubrication delivery and drainage systems.

Sealing of the bearings is important to eliminate the possibility of contaminant ingress and to retain the grease within the bearing structure.

Bearing speed ratings may reduce with grease lubrication. If you plan to use greased bearings, advice on maximum speeds can be obtained from Gamet's engineering department.

Gamet Bearings offers a service of supplying bearings pre-greased to suit your requirements


After installation bearings require a running-in phase to condition and match mating surfaces, this will ensure optimum performance.This is more critical when using grease lubrication as sufficient time is required to disperse and evenly distribute the lubricant within the bearing. If this is neglected, temperatures can rise rapidly causing localised overheating and lubricant break-down which can lead to premature bearing failure or inferior spindle performance.

Gamet Bearings offer advice relating to specific applications.