Abstract: A seal member is provided in which lip wear is suppressed and resistance to muddy water is increased, as well as a bearing device for a wheel, provided with the seal member. An encoder (63) and an elastic member (65) form a labyrinth section (8) between an outer peripheral surface (61a) of a turned-back section (613) and an inner peripheral surface (64a) of an inner fitting section (641). The labyrinth section (8) extends axially outward and radially outward, and an inner peripheral surface (63c) of the encoder (63) that covers an inner peripheral surface (61c) of the turned-back section (613) is sloped axially inward and radially outward.

Abstract: The present invention addresses the problem of providing: a seal member in which lip wear is suppressed and resistance to muddy water is increased; and a bearing device for a wheel, provided with the seal member. An encoder (63) and an elastic member (65) form a labyrinth section (8) between an outer peripheral surface (61a) of a turned-back section (613) and an inner peripheral surface (64a) of an inner fitting section (641). The labyrinth section (8) extends axially outward and radially outward, and an inner peripheral surface (63c) of the encoder (63) that covers an inner peripheral surface (61c) of the turned-back section (613) is sloped axially inward and radially outward.

Abstract: Provided is a method of manufacturing a bearing device for a wheel including an inner ring that is fixed to a hub wheel by a caulking portion formed by plastically deforming an end portion of the hub wheel in a radially outward direction. The inner ring includes a raceway groove formed by grinding. A backing plate, which is driven to rotate about an axis thereof, is pressed on a large end surface of the inner ring. The grinding is performed by rotating the inner ring by rotation of the backing plate. A pressing position of the backing plate is apart from a radially-outer-side chamfered portion and a radially-inner-side chamfered portion of the large end surface of the inner ring.

Abstract: Provided is a method of manufacturing a bearing device for a wheel including an inner ring that is fixed to a hub wheel by a caulking portion formed by plastically deforming an end portion of the hub wheel in a radially outward direction. The inner ring includes a raceway groove formed by grinding. A backing plate, which is driven to rotate about an axis thereof, is pressed on a large end surface of the inner ring. The grinding is performed by rotating the inner ring by rotation of the backing plate. A pressing position of the backing plate is apart from a radially-outer-side chamfered portion and a radially-inner-side chamfered portion of the large end surface of the inner ring.