Taiho Kogyo Co., Ltd.

Yoshio Kumada

Soji Kamiya

Katsuyuki Hashizume

Yuji Yokota

Tatsuhiko Fukuoka

Takashi Tomikawa

Kenichiro Futamura

Hiroshi Kanayama

Souzi Kamiya

Mitsuaki Hakamata

A helical grooveB is formed in the sliding surfaceA of a sliding bearingover the entire axial region thereof. To establish the height of a peaka defined by the helical grooveB, an imaginary reference line L extending parallel to the axis is formed which is determined such that the total cross-sectional area of all the peaksa is equal to the total cross-sectional area of all the valleysb when the helical grooveB is considered in axial section. A height, as measured from the reference line L to the topa' of the peaka is chosen in the range of from 1 to 8 &#x3bc;m. The space created by forming the valleysb allows the supply of lubricant oil to be increased, thereby simultaneously achieving a reduction in the frictional resistance and the occurrence of an impact sound.

Sliding bearing

A slide member which is excellent in the initial running-in property and can provide an excellent sliding property even under a strict sliding condition and, in particular, a slide member with a solid lubrication coating film which is excellent not only in the friction property but also in the wear resistance under the fluid lubrication, boundary lubrication and dry lubrication conditions. The slide member includes a solid lubrication coating film on a flat-plate-shaped base member, characterized in that, in the surface of the slide member, there are formed a plurality of concentrical grooves extending in the peripheral direction of the slide member surface, and, between the mutually adjoining ones of the grooves, there are formed ridge portions respectively.

Sliding material

Bearing unit

A sliding-bearing material having enhanced seizure resistance and fatigue resistance. The sliding-bearing material comprises an aluminum bearing alloy whose surface has been treated and a coating layer formed on the aluminum bearing alloy and consisting of from 90 to 55% by weight of a sold lubricant and from 10 to 45% by weight of a polyimide binder. Treatment of the aluminum bearing alloy can be by roughening with alkali etching and pickling, by covering with a chemical conversion film, and/or by drilling.

Sliding-Bearing Material

Copper bearing alloy

An aluminum bearing alloy to which is added 3-20% by weight of tin, 0.2-2% of copper and either 0.2-1.2% of manganese or 0.1-1% of zirconium. Additionally 0.1-5% of lead and/or 1.5-8% of silicon may be added.

Aluminum bearing alloy

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Toyota, Japan

Yoshio Kumada