A rolling element bearing comprises an inner ring and an outer ring which
are each provided with a raceway, and a series of rolling elements which
are in contact with the raceways of each ring. A lubricant film is
provided in the contacts between the rolling elements and the raceways,
which film forms a lubricant meniscus at the inlet side of each contact.
In the bearing starved lubrication conditions prevail. The surface of
each rolling element has minute recesses filled with a lubricant
quantity, said recesses being flattened in the contact area defined by
the contact between the rolling elements and the rings and thereby
releasing lubricant at the inlet side of each contact resulting in a
displacement of the meniscus further away from said contact. This
meniscus displacement results in an increased lubricant film thickness in
each contact area, thus improving the lubricating conditions in the
bearing.