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US 10,995,797 B2Granted
Electroplated component of a rolling element bearing
AssigneeAktiebolaget Skf
InventorsXiaobo Zhou, Yannick Baubet, Johannes Biegner, Christine Matta, Hubertus Laurentius Maria Peek, Hans Verschoor, Roel van der Zwaan
Life of this patent
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Abstract
A bearing component of a rolling element bearing, such as a rolling element, a bearing ring, and/or a cage for retaining rolling elements of a rolling element bearing, has an outer surface with a plating layer providing at least 97 wt. % tin. The tin of the plating layer provides alpha and beta phases of tin in an alpha/beta phase ratio of less than 10%.
Claims13
A bearing component of a rolling element bearing comprising:
- a bearing ring, or
- a bearing cage,
- wherein an outer surface of the bearing component is provided with a ductile plating layer comprising at least 97 wt.% tin, the tin of the plating layer comprising alpha and beta phases of tin in an alpha/beta phase ratio of less than or equal 4%, and one or more elements selected from:
- antimony, bismuth, indium and silver.
1 more element
A bearing component of a rolling element bearing comprising:
- a bearing cage,
- wherein an outer surface of the bearing cage is provided with a ductile plating layer comprising at least 97 wt.% tin, the tin of the plating layer comprising alpha and beta phases of tin in an alpha/beta phase ratio of less than 10%, or
- wherein the ductile plating layer comprises at least 97 wt.% electroless nickel, or at least 97 wt.% electrolytic nickel, or at least 97 wt.% copper,
- wherein the bearing cage is in sliding contact with an outer surface of rolling elements or a surface of a bearing ring, and
- wherein the outer surface of the rolling elements or the surface of the bearing ring is provided with a layer of black oxide so that the ductile plating layer on the bearing cage is in sliding contact with the layer of black oxide.
2 more elements
A bearing component comprising:
- a bearing cage having an outer surface and a ductile plating layer on the outer surface,
- wherein the ductile plating layer comprising at least 97 wt.% tin,
- wherein the tin includes alpha phase tin and beta phase tin, and
- wherein a ratio of the alpha phase tin to the beta phase tin is less than 4%.
1 more element
Dependencies are inferred from the claim text.