BEARING MADE OF GRAPHITE DISPERSED Cu BASED SINTERED ALLOY FOR MOTOR TYPE FUEL PUMP

摘要

PROBLEM TO BE SOLVED: To provide a bearing of a motor type fuel pump which exhibits excellent wear resistance under the high pressure-high speed passage of a liquid fuel. SOLUTION: The bearing of a motor type fuel pump is consisting of a graphite dispersed Cu based sintered alloy having a composition containing, by mass, 20 to 40% Ni, 0.1 to 0.9% P and 1 to 8% C, and the balance Cu with inevitable impurities, and having a porosity of 5 to 25%.