Daido Metal Company Ltd.

Takahito Nakagawa

Shigeru Inami

Tomohiro Ukai

Manabu Izumida

Yukihiro Ito

A bearing member according to an embodiment of the present invention is formed into a single cylindrical shape or a cylindrical shape divided into arcs along a circumferential direction, and is assembled to a housing on an outer peripheral side of the bearing member. The bearing member includes an outer peripheral surface provided on a side opposed to an inner peripheral surface of the housing. A maximum height Rz (&#x3bc;m) of a surface roughness of the outer peripheral surface is set as 2.00 &#x3bc;m&#x2264;Rz&#x2264;4.00 &#x3bc;m, and a value of ratio between an average protruding-peak height Rpk (&#x3bc;m) and a load length rate Mr1 (%), that is a load curve parameter for the surface roughness is set as 0.010&#x2264;Rpk/Mr1&#x2264;0.100.

Bearing member, housing, and bearing device using the same

There is provided a slide bearing for a crankshaft of an internal combustion engine, having a pair of half bearings combined with each other to form the slide bearing, and a crush relief formed in each end portion region in a circumferential direction of an inner peripheral surface of each half bearing by reducing a bearing wall thickness over an entire width in an axial direction of the half bearing, wherein a relief depth RD which is a reduction amount of the bearing wall thickness of the crush relief is maximum at each end portion in the circumferential direction of the half bearing, and gradually decreases toward a center in the circumferential direction, and the relief depth RD is maximum in a center in an axial direction of the half bearing, and gradually decreases toward both end portions in the axial direction.

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Inuyama, Japan

Takahito Nakagawa