Patent ID: 9316253
Filing Date: 2016-04-19
CPC Classification: B22F,F16C

Claim Text:
1. A sintered bearing obtained by sintering mixed powder containing main component metal powder and binder metal powder, wherein the main component metal powder has a higher melting point than the sintering temperature, and the binder metal powder has a lower melting point than the sintering temperature, the sintered bearing comprising inner holes impregnated with a lubricating oil, wherein a maximum diameter d of each of surface openings formed in a bearing surface falls within a range of 0 μm<d≦25 μm, wherein a maximum particle diameter of the binder metal powder is from 10 μm to 25 μm, wherein a maximum particle diameter of the main component metal powder is greater than the maximum particle diameter of the binder metal powder, and wherein a minimum particle diameter of the mixed powder is more than 10 μm.