OIL IMPREGNATED SINTERED BEARING AND PRODUCTION METHOD THEREOF

Title:

OIL IMPREGNATED SINTERED BEARING AND PRODUCTION METHOD THEREOF

Document Type and Number:

WIPO Patent Application WO/2019/098240

Kind Code:

A1

Abstract:

A plurality of recessed oil supply surfaces arranged in an isolated island-like distribution pattern, and a sliding surface continuous around the oil supply surfaces and supporting the outer circumferential surface of a shaft, are formed on the inner circumferential surface of a bearing hole into which the shaft is inserted, and the maximum difference in elevation between the sliding surface and the oil supply surfaces is 0.01% to 0.5% of the inner diameter Di of the sliding surface. The surface opening ratio of pores in the sliding surface is equal to or less than 10%, the surface opening ratio of the pores in the oil supply surfaces is more than 10% and less than 40%, and the surface area of a single oil supply surface is 0.03 mm2 to 0.2×Di2 mm2.

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Inventors:

KOUNO HAJIME (JP)
ISHII YOSHINARI (JP)
MARUYAMA TSUNEO (JP)
KATOU JYUN (JP)
ORITO KENJI (JP)

Application Number:

PCT/JP2018/042139

Publication Date:

May 23, 2019

Filing Date:

November 14, 2018

Export Citation:

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Assignee:

MITSUBISHI MATERIALS CORP (JP)
DIAMET CORP (JP)

International Classes:

F16C33/10; F16C17/02; F16C33/12; F16C33/14

Domestic Patent References:

WO2017110778A1

2017-06-29

Foreign References:

JPH08291823A	1996-11-05
JP2010007141A	2010-01-14
JP2001279301A	2001-10-10
JP2017219996A	2017-12-14
JPH04307111A	1992-10-29
JPH05115146A	1993-05-07
JP2016194374A	2016-11-17

Other References: