SINTERED OIL-RETAINING BEARING AND PRODUCTION METHOD THEREFOR

WIPO Patent Application WO/2002/040880

A1

A sintered oil-retaining bearing comprising a bearing body formed from a porous sintered alloy, and a bearing hole formed in the bearing body and adapted to receive a rotary shaft passing therethrough, wherein the inner peripheral surface of the bearing hole has a sliding surface formed by smashing vacancies in the front surface when the bearing body is compact-pressed, and a porous oil supply surface for providing the portion of the inner peripheral surface other than the sliding surface with a higher surface porosity than that of the sliding surface, the surface porosity of the sliding surface being set to within a range of 0.05 to 10% and that of the oil supply surface to within a range of 15 to 60%, whereby a sufficient oil film strength on the sliding surface and a satisfactory lubricating oil supply can be ensured to thereby reduce a friction coefficient at starting.

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KANEZAKI NOBORU (JP)
TANAKA TAKESHI (JP)
HAYASHI YOSHIAKI (JP)

PCT/JP2000/008020

May 23, 2002

November 14, 2000

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MITSUBISHI MATERIALS CORP (JP)
ASMO CO LTD (JP)
KANEZAKI NOBORU (JP)
TANAKA TAKESHI (JP)
HAYASHI YOSHIAKI (JP)

F16C33/10; F16C33/12; (IPC1-7): F16C17/02; F16C33/10; F16C33/14

JPH06123314A	1994-05-06
JPH01219108A	1989-09-01
JPH08177859A	1996-07-12
US4290655A	1981-09-22

Shiga, Masatake (Takadanobaba 3-chome Shinjuku-ku Tokyo, JP)

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