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AssigneeAktiebolaget Skf
InventorsGuillermo MORALES ESPEJEL, Kenred STADLER, Victor BRIZMER
Estimating the term…
A bearing comprising a plurality of rolling elements arranged between an inner and outer raceway thereof. A rolling contact interface is between a first rolling contact surface on at least one rolling element and a second rolling contact surface formed by one of the inner and outer raceways. The first rolling contact surface has a first RMS roughness Rq1 and a first roughness pattern γ1, expressed in terms of the Peklenik number γ. The second rolling contact surface has a second RMS roughness Rq2 and a second roughness pattern γ2. To minimise micropitting in the bearing, the rolling contact interface has a surface topography wherein (a) the roughness pattern of the first and second rolling contact surfaces are oriented in the direction of rolling, whereby γ1≧3.0 and γ2≧10.0; and (b) the first and of the second rolling contact surfaces have substantially equal roughness heights, whereby 0.8≦Rq1/Rq2≦1.25.
A bearing comprising a plurality of rolling elements arranged between an inner raceway (12) and an outer raceway (22) of the bearing, a rolling contact interface being defined between a first rolling contact surface (31) on at least one rolling element and a second rolling contact surface formed by one of the inner and outer raceways (12, 22), wherein:
The bearing of any preceding claim, wherein the bearing is a cylindrical roller bearing, a spherical roller bearing, a tapered roller bearing, a toroidal roller bearing or a needle roller bearing.
A method of manufacturing a bearing ring (10, 20) comprising a bearing raceway (12, 22), in which the raceway is subjected to a grinding operation that creates asperities with a longitudinal directionality on the raceway, characterized in that
Dependencies are inferred from the claim text.