Patent ID: 8123410

Claim:
A rolling bearing device comprising: an outer ring connected to a mounting opening of a knuckle on a vehicle inner side; an inner ring connected to a wheel on a vehicle outer side through a hub; rolling elements interposed between the outer and inner rings; a sealing device for sealing a space between the inner and outer rings from the outside; a drive shaft which passes through the inner ring and is rotatable together with the inner ring; a sealing member for limiting foreign substance invading the rolling bearing from a clearance existing between the drive shaft and the knuckle; and a magnet rotor fitted on the vehicle inner side of the sealing device, wherein the sealing member includes a ring-shaped elastic sealing body and a ring-shaped cover integrated to the sealing body, wherein the cover includes a cylinder press-fit in an outer or inner peripheral surface of the outer ring and a ring-shaped upstanding wall coupled with the cylinder, and wherein a drain hole is formed at a lower part of the cover so as to drain water, and has an inner diameter equal to or greater than an outer diameter of the magnet rotor.