PROTECTIVE COVER AND BEARING DEVICE INCLUDING PROTECTIVE COVER

The present invention is intended to provide a protective cover, comprising an inner ring with an inner ring track surface A on an outer peripheral surface; an outer ring with an outer ring track surface A on an inner peripheral surface; a bearing with rolling elements between the inner ring track surface A and the outer ring track surface A; a magnetic encoder that is positioned at one axial end portion of the bearing and fixed to the inner ring ; and a magnetic sensor that is fixed to the outer ring , a cup-shaped protective cover press-fitted into the outer ring to cover the magnetic encoder and intervene between the magnetic encoder and the magnetic sensor is formed by performing cold press molding of an austenitic stainless steel plate material with a nickel content of 8.5 to 13 weight %.