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Noboru Kanezaki

Yoshio Ebihara

Tsuneo Maruyama

Tsuneo Murayama

The Cu-based sintered alloy bearing of the present invention is made of a Cu-based sintered alloy with a composition consisting of, by weight, Ni: 10 to 25%, Zn: 10 to 25%, P: 0.1 to 0.9%, C: 0 to 5%, molybdenum disulfide: 0.5 to 5%, and Cu and inevitable impurities as the balance. The Cu-based sintered alloy has a texture from a Cu&mdash;P compound, free graphite, and molybdenum disulfide being dispersed in a base material made of a solid solution phase of a Cu&mdash;Ni&mdash;Zn alloy, and a porosity is within a range of 5 to 25%.

Copper-based sintered alloy bearing and motor fuel pump

A bearing for motorized fuel pumps comprising a graphite-dispersed copper-based sintered alloy which contains 10 to 25% by weight of Zn, 10 to 25% by weight of Ni, 0.1 to 0.9% by weight of P, and 1 to 8% by weight of C, the balance being Cu and unavoidable impurities, and which has a porosity of 5 to 25%, exhibits superior wear resistance to a high-pressure high-speed flow of a fuel.

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Columbus, IN, United States of America

Noboru Kanezaki