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Title:
RETAINER FOR ROLLING BEARINGS, AND ROLLING BEARING
Document Type and Number:
WIPO Patent Application WO/2019/022010
Kind Code:
A1
Abstract:
This retainer for rolling bearings is provided with: a retainer main body; and a hard film which is formed at least on a slide contact surface that is in sliding contact with the rolling body and another slide contact surface that is in sliding contact with another member within the outer surface of the retainer main body. The hard film has a base layer that is directly film-formed on the outer surface of the retainer main body, a mixed layer that is mainly composed of WC and DLC and is film-formed on the base layer, and a surface layer that is mainly composed of DLC and is film-formed on the mixed layer. The mixed layer is configured such that the WC content in the mixed layer decreases continuously or in stages and the DLC content in the mixed layer increases continuously or in stages from the base layer side toward the surface layer side. The hydrogen content in the mixed layer is less than 10% by atom.

Inventors:
NAKANISHI Masaki (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
MIKAMI Hidenobu (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
Application Number:
JP2018/027507
Publication Date:
January 31, 2019
Filing Date:
July 23, 2018
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
F16C33/56; F16C9/04; F16C19/26
Foreign References:
JP2013079721A2013-05-02
JPH116521A1999-01-12
JP2004347130A2004-12-09
JP2007270963A2007-10-18
JP2010060116A2010-03-18
JP2013204621A2013-10-07
Attorney, Agent or Firm:
SHIROMURA Kunihiko et al. (Ehara Patent Office, 2-15 Bakurou-machi 4-chome, Chuo-ku, Osaka-sh, Osaka 59, 〒5410059, JP)
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