Invention Grant
- Patent Title: Rolling bearing, rolling device, and method of manufacturing rolling device
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Application No.: US16071851Application Date: 2017-01-05
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Publication No.: US11028880B2Publication Date: 2021-06-08
- Inventor: Naoya Hasegawa
- Applicant: NTN CORPORATION
- Applicant Address: JP Osaka
- Assignee: NTN CORPORATION
- Current Assignee: NTN CORPORATION
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JPJP2016-009964 20160121,JPJP2016-034480 20160225,JPJP2016-170758 20160901
- International Application: PCT/JP2017/000128 WO 20170105
- International Announcement: WO2017/126323 WO 20170727
- Main IPC: F16C33/62
- IPC: F16C33/62 ; F16C19/16

Abstract:
A rolling bearing, a rolling device, and a method of manufacturing the rolling device are provided, by which a long life can readily be implemented by suppressing surface damage even on the use condition that the oil film formation performance of a rolling part is poor. A rolling device includes: a first rolling component made of SUJ2; and a second rolling component made of SUJ2 and configured to contact the first rolling component. A surface of a rolling part of the first rolling component is greater in arithmetic mean roughness than a surface of a rolling part of the second rolling component. The arithmetic mean roughness of the surface of the rolling part of the second rolling component is 0.07 μm or more and 0.20 μm or less.
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