OIL-IMPREGNATED SINTERED BEARING AND PRODUCTION METHOD THEREFOR

Title:

OIL-IMPREGNATED SINTERED BEARING AND PRODUCTION METHOD THEREFOR

Document Type and Number:

WIPO Patent Application WO/2018/074515

Kind Code:

A1

Abstract:

This oil-impregnated sintered bearing comprises a Fe-Cu sintered body impregnated with a lubricant oil and has a bearing hole for supporting a rotation shaft passing therethrough. The inner circumferential surface of the bearing hole comprises a first region that forms a center portion in the axial direction, a second region extending from one end of the first region to one opening of the bearing hole, and a third region extending from the other end of the first region to the other opening of the bearing hole. The area ratio of a Cu phase in the center along the axial direction of the second region is 80-100% of the area ratio of a Cu phase in the center along the axial direction of the third region.

Inventors:

TAMURA YOSHIKI (JP)
SAKAI HIDEO (JP)
SAKAI OSAMU (JP)

Application Number:

PCT/JP2017/037704

Publication Date:

April 26, 2018

Filing Date:

October 18, 2017

Export Citation:

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Assignee:

DIAMET CORP (JP)

International Classes:

B22F5/00; B22F1/00; B22F3/035; F16C33/10; F16C33/12; F16C33/14

Foreign References:

JP2014025086A	2014-02-06
JP2006299347A	2006-11-02
JPH06240301A	1994-08-30
JP2000240653A	2000-09-05
JP2016204110A	2016-12-08
JPH0819941B2	1996-03-04
JP2004308682A	2004-11-04
JP2006299347A	2006-11-02

Other References: