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• ABEC Precision Tables
SNFA Super Precision Angular Contact Bearings
Lubrication - Grease Quantity
The amount of grease to be introduced into the bearing depends on operating speed. The amount is calculated by multiplying factor K, a function of maximum rotation speed, expressed in "ndm" (Fig.1) by the "reference quantity" bore and bearing series function as shown in the diagram (Fig.2).
In the case of small bearings where grease quantities
are very small, it is advised that before greasing, the
bearings are immersed in a grease solution (containing
3 - 5% of grease) then removed and allowed to drain (and
the solvent to evaporate) before applying the grease.
This ensures that all the bearing surfaces are covered
with a thin layer of the lubricant.
SNFA bearings are often supplied with the type and amount of grease as specified by the customer, both in open and sealed versions, if available.
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