Sliding bearing element
US-2018017107-A1 · Jan 18, 2018 · US
Electroplated component of a rolling element bearing
US10995797B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-10995797-B2 |
| Application number | US-201816027415-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 5, 2018 |
| Priority date | Jul 5, 2017 |
| Publication date | May 4, 2021 |
| Grant date | May 4, 2021 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
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%.
First claim
Opening claim text (preview).
What is claimed is: 1. 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. 2. The bearing component of claim 1 , wherein the ductile plating layer has a thickness of less than 3 μm. 3. The bearing component of claim 1 , wherein the ductile plating layer comprises pure tin. 4. The bearing component of claim 1 , wherein the ductile plating layer comprises 99.5-99.9 wt.% tin and 0.1-0.5 wt.% of antimony, bismuth, indium and/or silver. 5. The bearing component according to claim 1 , wherein the alpha/beta phase ratio is less than or equal to 3%. 6. The bearing component according to claim 1 , wherein the bearing component is the bearing cage; and wherein the ductile plating layer has a thickness of between 5 and 30 μm. 7. 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. 8. The bearing of claim 7 , wherein the black oxide layer has a thickness of between 0.2 to 1.5μm. 9. The bearing component according to claim 7 , wherein the ductile plating layer comprises at least 97 wt.% electroless nickel. 10. The bearing component according to claim 7 , wherein the ductile plating layer comprises at least 97 wt.% tin, and the alpha/beta phase ration is less than or equal to 4%. 11. 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%. 12. The bearing component according to claim 11 , wherein the ratio is less than or equal to 3%. 13. The bearing component according to claim 12 , wherein the ductile plating layer comprises 99.5-99.9 wt.% tin and 0.1-0.5 wt.% of antimony, bismuth, indium and/or silver.
Assignees
Inventors
Classifications
- F16C33/565Primary
Coatings · CPC title
Alloys based on tin · CPC title
Coatings · CPC title
Thickness, e.g. thickness of coatings · CPC title
by electroplating or electrolytic coating, e.g. anodising, galvanising · CPC title
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Frequently asked questions
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- What does patent US10995797B2 cover?
- 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%.
- Who is the assignee on this patent?
- Skf Ab
- What technology area does this patent fall under?
- Primary CPC classification F16C33/565. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue May 04 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 6 related publications on this page (citations in our corpus or others sharing the same primary CPC).