ROLLING PART, BEARING, AND PRODUCTION METHOD THEREFOR

Title:

ROLLING PART, BEARING, AND PRODUCTION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2019/103039

Kind Code:

A1

Abstract:

Provided are a rolling part, a bearing including the rolling part, and a production method therefor, for which a cause of early breakage of a bearing has been eliminated at a low cost, or for which rolling fatigue lifetime is excellent even if such a cause of early breakage of a bearing is present. A rolling part (21) has a surface (21A). The rolling part (21) has a fiber flow (FF) included therein. The surface (21A) is configured to satisfy 0.1 μmRa or less, Rsk<0, and at least 700 MPa of compressive residual stress. An angle formed by the surface (21A) and the fiber flow (FF) is at least 15 degrees.

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Inventors:

OKADA TAKAHIRO (JP)
FUJITA TAKUMI (JP)
KAMURA NAOYA (JP)
SUGISAKI YOSHINORI (JP)

Application Number:

PCT/JP2018/042990

Publication Date:

May 31, 2019

Filing Date:

November 21, 2018

Export Citation:

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Assignee:

NTN TOYO BEARING CO LTD (JP)

International Classes:

F16C33/58; F16C19/36; F16C33/64

Foreign References:

JPH03271343A	1991-12-03
JP2002181050A	2002-06-26
JP2011067868A	2011-04-07
JP2016151352A	2016-08-22

Attorney, Agent or Firm:

FUKAMI PATENT OFFICE, P.C. (JP)

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