Patent ID: 8216338
Filing Date: 2012-07-10
Classification: B22F,C22C,F16C

Abstract:
1. A bush-type bearing having a body with an inner diameter part, into which a shaft is rotatably fitted, the bearing is formed by sintering a composition comprising, on the basis of the total weight thereof, 0.7 wt % to 10 wt % of nickel (Ni), 0.01 wt % to 0.5 wt % of silicon (Si), 0.005 wt % to 0.4 wt % of boron (B), 0.01 wt % to 1.0 wt % of carbon (C), 15 wt % to 25 wt % of copper (Cu) and a balance of Fe, wherein the bearing includes pores within a range from 15 vol % to 25 vol % on the basis of an entire volume thereof, and wherein the pores are impregnated with a lubricant, which has kinematic viscosity within a range from 80 cSt to 240 cSt and viscosity index within a range from 150 to 280 at 40° C.