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Title:
SHAFT MEMBER FOR FLUID BEARING DEVICE, MANUFACTURING METHOD THEREFOR, AND FLUID BEARING DEVICE
Document Type and Number:
WIPO Patent Application WO/2018/061606
Kind Code:
A1
Abstract:
A shaft member for a fluid bearing device, said shaft member having at the outer circumference two bearing surfaces 31 and 32 separated from each other in the axial direction, and a central recessed section 33 formed between the bearing surfaces 31 and 32 and having a smaller diameter than the bearing surfaces. The central recessed section 33 is provided with a cylindrical surface section 331 comprising a grinding surface, and step sections 332 arranged on both sides of the cylindrical surface section in the axial direction and having a different diameter than the cylindrical surface section.

Inventors:
HIRADE Jun (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
YAMAGOU Masashi (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
FUJIWARA Mikihisa (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
KURIMURA Tetsuya (3066 Aza Oyumida, Oaza Higashikata, Kuwana-sh, Mie 78, 〒5118678, JP)
Application Number:
JP2017/031481
Publication Date:
April 05, 2018
Filing Date:
August 31, 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:
F16C17/10; B21K1/06; B23B1/00; B24B5/04; B24B41/06; F16C33/10; F16C33/14
Foreign References:
JP2003307221A2003-10-31
JP2006077863A2006-03-23
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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