Patent ID: 7362023

Claim:
A rolling bearing assembly equipped with an electric power generator, the rolling bearing comprising: inner and outer members rotatable relative to each other through rolling elements; and an electric power generator including a multi-pole magnet assembly mounted on one of the inner and outer members and having a plurality of alternating magnetic poles arranged in a circumferential direction, and a magnetic ring assembly made of magnetic material forming a space closed in radial and axial directions and mounted on the remaining one of the inner and outer members and accommodating a coil in said closed space and confronting the multi-pole magnet assembly, wherein the magnetic ring assembly includes a stepped portion of a generally L-shaped section having a peripheral surface portion and an end face portion, said stepped portion being defined on an outer periphery or an inner periphery of one end of the magnetic ring assembly, the magnetic ring assembly being mounted on the remaining one of the inner and outer members with the peripheral surface portion of the stepped portion press-fitted directly onto a peripheral surface of the remaining one of the inner and outer members within a bearing space.