Title:
OIL-IMPREGNATED SINTERED BEARING
Document Type and Number:
WIPO Patent Application WO/2018/079670
Kind Code:
A1
Abstract:
The present invention pertains to an oil-impregnated sintered bearing in which a Fe-Cu-based sintered body is impregnated with lubricant oil and which has a bearing hole (3) for supporting a rotary shaft (2) inserted therethrough, wherein: an inner circumferential surface (S) of the bearing hole (3) is at least provided with a first region (3A) that includes the central part in an axial direction and provided with a second region (3B or 3C) that covers from one end of the first region (3A) up to one opening of the bearing hole (3); and the second region (3B or 3C) has a friction surface (S2 or S3) that has a larger Fe-phase area and a smaller Cu-phase area as compared to those in a friction surface (S1) of the first region (3A).
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Inventors:
TAMURA YOSHIKI (JP)
TAKEZOE SHINICHI (JP)
TAKEZOE SHINICHI (JP)
Application Number:
PCT/JP2017/038745
Publication Date:
May 03, 2018
Filing Date:
October 26, 2017
Export Citation:
Assignee:
DIAMET CORP (JP)
International Classes:
F16C33/10; B22F5/00; F16C17/02; F16C33/12
Domestic Patent References:
| WO2016147925A1 | 2016-09-22 | |||
| WO2016152474A1 | 2016-09-29 |
Foreign References:
| JP2007247810A | 2007-09-27 | |||
| JP2008240908A | 2008-10-09 | |||
| JP2010077474A | 2010-04-08 | |||
| JP2016209695A | 2016-12-15 | |||
| JPH0819941B2 | 1996-03-04 | |||
| JP2004308682A | 2004-11-04 | |||
| JP2006299347A | 2006-11-02 |
Other References:
See also references of EP 3534023A4
Attorney, Agent or Firm:
MATSUNUMA Yasushi et al. (JP)
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