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Title:
ROLLING BEARING, AND ABRASION RESISTANCE TREATMENT METHOD FOR BEARING RACEWAY SURFACE
Document Type and Number:
WIPO Patent Application WO/2017/164256
Kind Code:
A8
Abstract:
Provided is a rolling bearing which can reduce the abrasion of the raceway surface of the race thereof, and with which surface treatment of the raceway surface is easy. Also provided is an abrasion resistance treatment method for bearing raceway surfaces. Rolling elements are interposed between an inner race and an outer race. A surface layer section beneath the raceway surface (10a) of the base material in a race (10), which is an inner race or an outer race, is harder than a general section (12) of the base material, and is an abrasion resistant layer (13) having a microrelief surface. The rolling bearing comprises an oxide coating layer (14) that has the film thickness (t) of the depth of recesses in the microrelief surface of the abrasion resistant layer (13), that has protrusions and recesses following the microrelief surface on the surface thereof, and that covers the surface of the abrasion resistant layer (13). The oxide coating layer (14) is a more brittle material than the abrasion resistant layer (13) of the base material.

Inventors:
YAN, Weida (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
SEKO, Kazumasa (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
HORI, Michio (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
YAMAMOTO, Takashi (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
HASEGAWA, Naoya (105 Hidamarinooka 5-chome, Kuwana-sh, Mie 67, 〒5110867, JP)
Application Number:
JP2017/011542
Publication Date:
September 20, 2018
Filing Date:
March 22, 2017
Export Citation:
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Assignee:
NTN CORPORATION (3-17, Kyomachibori 1-chome Nishi-ku, Osaka-sh, Osaka 03, 〒5500003, JP)
International Classes:
F16C33/64; F16C19/38; F16C23/08; F16C33/62
Attorney, Agent or Firm:
SUGIMOTO, Shuji et al. (Higobashi Nittai Bldg, 10-2 Edobori 1-chome, Nishi-ku, Osaka-sh, Osaka 02, 〒5500002, JP)
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