Patent ID: 6997615

Claim:
A rolling bearing apparatus comprising: a rotating ring comprising a flange for supporting a wheel; a fixed ring which is supported on an outer diameter side of the rotating ring concentrically with the rotating ring and is not rotated; a plurality of rolling members rollably provided between the rotating ring and the fixed ring; a pulser ring which is installed at an outer peripheral surface on one end side in an axial direction of the rotating ring and a magnetic property of which is changed alternately in a circumferential direction; a sensor cover made of a nonmagnetic material installed to an inner peripheral surface on one end side in an axial direction of the fixed ring by making one face thereof proximate to the pulser ring and closing a ring-like space between the fixed ring and the rotating ring; and a sensor supported by at least one of the fixed ring and a portion of a vehicle body is proximate to or brought into contact with another face of the sensor cover to be opposed to the pulser ring in the axial direction via the sensor cover, wherein an outer peripheral edge of the sensor cover comprises a folded portion folded to an inner side of a bearing and a fitting portion formed at least at a portion of the folded portion, wherein a fitted portion for fitting the fitting portion is formed at a predetermined position of an inner peripheral surface of the fixed ring, and wherein a position in the axial direction of the sensor cover relative to the pulser ring is set to position by fitting the fitting portion of the sensor cover to the fitted portion of the fixed ring.