Cage for rolling bodies of a bearing
US-8967879-B2 · Mar 3, 2015 · US
Roller bearing cage
US9829039B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9829039-B2 |
| Application number | US-201414911339-A |
| Country | US |
| Kind code | B2 |
| Filing date | Jul 1, 2014 |
| Priority date | Aug 23, 2013 |
| Publication date | Nov 28, 2017 |
| Grant date | Nov 28, 2017 |
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- Title
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- Abstract
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Abstract
Official abstract text for this publication.
A roller bearing cage, in particular for use with insufficient lubrication, including a plastic base body ( 2 ), a modified surface ( 4 ) of the base body ( 2 ), and a metallic coating ( 3 ) on the modified surface ( 4 ) of the base body ( 2 ).
First claim
Opening claim text (preview).
The invention claimed is: 1. A roller bearing cage comprising: a base body made from plastic, a modified surface on the base body, and a metallic coating on the modified surface of the base body, wherein the modified surface of the base body has a waviness (Wt) that is at least ten times as large as a roughness (Ra) of the modified surface and greater than a layer thickness of the metallic coating. 2. The roller bearing cage according to claim 1 , wherein the modified surface comprises a chemical modification of a surface of the base body. 3. The roller bearing cage according to claim 1 , wherein the metallic coating contains wear-protection particles. 4. The roller bearing cage according to claim 1 , wherein an additional layer is deposited on the metallic coating. 5. The roller bearing cage according to claim 4 , wherein the additional layer comprises a sol-gel layer. 6. The roller bearing cage according to claim 4 , wherein the additional layer comprises a carbon layer. 7. The roller bearing cage according to claim 1 , wherein the metallic coating includes friction-reducing particles. 8. The roller bearing cage according to claim 1 , wherein the metallic coating has a grain size that is less than 500 nm. 9. The roller bearing cage according to claim 1 , wherein a thickness of the metallic layer is less than 0.5 mm. 10. The roller bearing cage according to claim 1 , wherein the metallic layer includes chromium, copper, nickel, cobalt, and/or iron. 11. The roller bearing cage according to claim 1 , wherein the metallic layer is formed as a nanocrystalline coating. 12. A method for producing a roller bearing cage comprising: producing a base body made from plastic, modifying a surface of the base body to form a modified surface, depositing a metallic coating on the modified surface of the base body, wherein the modified surface of the base body has a waviness (Wt) that is at least ten times as large as a roughness (Ra) of the modified surface and greater than a layer thickness of the metallic coating. 13. The method according to claim 12 , wherein the surface of the base body is modified by a plasma. 14. The method according to claim 12 , further comprising mechanically pre-treating the surface of the base body. 15. The method according to claim 12 , further comprising depositing an additional layer on the metallic coating by high velocity oxygen fuel spraying. 16. The method according to claim 12 , wherein the metallic coating includes friction-reducing particles. 17. The method according to claim 12 , wherein the metallic coating has a grain size that is less than 500 nm. 18. The method according to claim 12 , wherein a thickness of the metallic layer is less than 0.5 mm. 19. The method according to claim 12 , wherein the metallic layer includes chromium, copper, nickel, cobalt, and/or iron. 20. The method according to claim 12 , wherein the metallic layer is formed as a nanocrystalline coating.
Assignees
Inventors
Classifications
- F16C33/4635Primary
made from plastic, e.g. injection moulded window cages · CPC title
Coatings · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US9829039B2 cover?
- A roller bearing cage, in particular for use with insufficient lubrication, including a plastic base body ( 2 ), a modified surface ( 4 ) of the base body ( 2 ), and a metallic coating ( 3 ) on the modified surface ( 4 ) of the base body ( 2 ).
- Who is the assignee on this patent?
- Schaeffler Technologies Ag
- What technology area does this patent fall under?
- Primary CPC classification F16C33/4635. Mapped technology areas include Mechanical Engineering.
- When was this patent published?
- Publication date Tue Nov 28 2017 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 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).