OIL-IMPREGNATED METAL BEARING

摘要

PROBLEM TO BE SOLVED: To provide an oil-impregnated metal bearing wherein a shaft hole is hard to deform even when raised and fixed to a base plate with caulking work. SOLUTION: The oil-impregnated metal bearing 2 comprises an attendant sintered part 30 integrally provided on the outer periphery side of a central sintered part 20 which has the shaft hole (h) for a motor shaft 7 to be rotatably supported therein. The attendant sintered part 30 has a collar portion 31 whose lower face is laid on the upper face side of the base plate 1, and a first caulking annular protrusion 32 integrally formed on the lower side of the collar portion 31 so as to be fitted into a supporting hole 1a of the base plate 1. The first caulking annular protrusion 32 is protruded downward from a lower opening face S of the shaft hole (h). COPYRIGHT: (C)2008,JPO&INPIT