Title:
SHAFT MEMBER FOR FLUID DYNAMIC-PRESSURE BEARING DEVICE AND MANUFACTURING METHOD FOR THE SAME
Document Type and Number:
Japanese Patent JP2010255755
Kind Code:
A
Abstract:
To provide a shaft member for a fluid dynamic-pressure bearing device that enhances processability of a flange so as to allow fastening work with a shaft to be easily and inexpensively executed while having excellent wear resistance of a bearing surface.
The shaft member for a fluid dynamic-pressure bearing device has a shaft 21 and a flange 22. At least one end face of the flange 22 forms a thrust bearing clearance in-between the face facing the one end face. The flange 22 comprises a base 23 forming a fastening part in-between the shaft 21 by plastic deformation, and a hard part 24 integrally formed on the base 23 so as to constitute the one end face while showing hardness higher than that of the base 23.
Inventors:
KOMORI ISAO
Application Number:
JP2009106772A
Publication Date:
November 11, 2010
Filing Date:
April 24, 2009
Export Citation:
Assignee:
NTN TOYO BEARING CO LTD
International Classes:
F16C17/10; F16C33/14; F16C33/24; F16C35/02
Domestic Patent References:
| JP2001065571A | 2001-03-16 | |||
| JP2009024810A | 2009-02-05 | |||
| JP2000314425A | 2000-11-14 |
Attorney, Agent or Firm:
Hideka Tanaka
Kunihiko Shiromura
Tsuyoshi Kumano
Kunihiko Shiromura
Tsuyoshi Kumano
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