Abstract: A sealing device which allows the man-hour for mounting the sealing device to be reduced is provided. A sealing device includes: a slinger fitted and fixed to an end portion of an inner shaft; a core metal fitted and fixed to an end portion of an outer ring; an inner seal lip fixed to the core metal and in slidable contact with the slinger; an outer seal lip fixed to the core metal radially outward of the inner seal lip and in slidable contact with a side surface of a flange portion; and a labyrinth lip fixed to the core metal radially outward of the outer seal lip and forming a labyrinth seal together with the side surface of the flange portion.

Abstract: A method for assembling a wheel bearing apparatus includes disposing a positioning jig such that a lateral face of the positioning jig on one side in an axial direction contacts a lateral face of a hub flange on a side of a slinger, the positioning jig having a ring shape separated into a plurality of partial portions arranged in a circumferential direction, a width of the positioning jig in the axial direction being equal to a distance between a lateral face of a disc portion on a side of the hub flange and a lateral face of the hub flange on the side of the slinger, the distance being set to obtain an appropriate interference; and attaching the slinger such that the lateral face of the disc portion on the side of the hub flange contacts a lateral face of the positioning jig on another side in the axial direction.

Abstract: A method for assembling a wheel bearing apparatus includes disposing a positioning jig such that a lateral face of the positioning jig on one side in an axial direction contacts a lateral face of a hub flange on a side of a slinger, the positioning jig having a ring shape separated into a plurality of partial portions arranged in a circumferential direction, a width of the positioning jig in the axial direction being equal to a distance between a lateral face of a disc portion on a side of the hub flange and a lateral face of the hub flange on the side of the slinger, the distance being set to obtain an appropriate interference; and attaching the slinger such that the lateral face of the disc portion on the side of the hub flange contacts a lateral face of the positioning jig on another side in the axial direction.

Abstract: A sealing device which allows the man-hour for mounting the sealing device to be reduced is provided. A sealing device includes: a slinger fitted and fixed to an end portion of an inner shaft; a core metal fitted and fixed to an end portion of an outer ring; an inner seal lip fixed to the core metal and in slidable contact with the slinger; an outer seal lip fixed to the core metal radially outward of the inner seal lip and in slidable contact with a side surface of a flange portion; and a labyrinth lip fixed to the core metal radially outward of the outer seal lip and forming a labyrinth seal together with the side surface of the flange portion.

Abstract: The present invention provides a rolling bearing device for vehicles capable of detecting a change in magnetism with high accuracy. A rolling bearing device H for vehicles in accordance with the present invention includes a rolling bearing 13 having an inner ring 11, which is a rotating ring, and an outer ring 12, which is a fixed ring, and rolling elements 3 and 4 interposed between both of the races 11 and 12; a magnetized element 14; a magnetic sensor 15; and a cover 16. The cover 16 is formed by demagnetizing a nonmagnetic material having being pressed.

Abstract: A cover member includes a metallic cover main body having a lid portion and a cylindrical portion and an elastic covering material which covers outer circumferential surfaces of the lid portion and the cylindrical portion. In a state resulting before the cover member is fitted in a one end side opening of an outer ring of a rolling bearing, of the elastic covering material, an outside diameter dimension of a cylindrical portion elastic layer which covers the outer circumferential surface of the cylindrical portion is set to be larger than an inside diameter dimension of an inner circumferential surface of the one end side opening. In an attached state in which the cover member is fitted in the outer ring, the cylindrical portion elastic layer is elastically compressed to thereby be brought into close contact with the inner circumferential surface of the one end side opening of the outer ring.

Abstract: A sealing device is mounted in an annular space defined between an inner member and an outer member which rotate relative to each other. The sealing device includes a slinger which has a cylindrical portion which is press fitted on or in one of the inner member and the outer member and an annular plate portion, and a seal main body which has a core metal having a cylindrical portion which is press fitted in or on the other of the inner member and the outer member and an annular plate portion and a seal member fixed to the core metal. A lip for closing a space between the annular plate portion of the slinger and the cylindrical portion of the core metal is provided on the slinger or the seal main body.

Abstract: It is a cage that is formed of a resin and that holds balls serving as rolling elements. The cage includes an annular base portion, and a plurality of claw portions that are formed to be arranged at constant intervals on the circumference of the base portion and to protrude therefrom. A pocket for accommodating the ball is formed between each pair of adjacent ones of the claw portions. In the resin cage for a ball bearing, thinning recesses are formed in end parts 11a of the claw portions and a rear surface of the base portion, respectively.

Abstract: The invention seeks to provide a rotor for use in rotary encoder, which is increased in magnetic intensity and mechanical strength thereby achieving exact detection of rotation speed. A corner portion formed between a cylindrical portion 21 and a mounting flange 22 of a core 20 constitutes a protrusion 23 unitized with the cylindrical portion and the mounting flange, protruded from axial one end of the cylindrical portion 21 and opened toward the axial other end thereof. A part of a pulser ring 31 is disposed in the protrusion 23.

Abstract: An outer ring shaft portion which is extended integrally from an end face of an outer ring of a constant velocity joint is fittingly inserted into an inside hole in a hub shaft of a wheel hub, so that the wheel hub and the constant velocity joint are coupled to each other. Internal splines and external splines are formed on an inner circumferential surface of the inside hole in the hub shaft and an outer circumferential surface of the outer ring shaft portion in such a manner as to mesh with each other. Side face splines are formed on end face of the hub shaft and an end face of the outer ring of the constant velocity joint. The wheel hub and the constant velocity joint are connected together in such a manner that torque can be transmitted therebetween.

Abstract: A wheel bearing apparatus includes a roller bearing, an inner shaft having an outer circumferential surface to which an inner ring of the roller bearing is installed, a coupler ring attached to an end portion of the inner shaft, and a caulked portion provided in an end portion of the inner shaft so as to fix the coupler ring and the roller bearing to the inner shaft so as to be immovable in an axial direction of the inner shaft. An outer diameter of the coupler ring is set smaller than a diameter of a shoulder portion of the inner ring. Alternatively, a protruding portion is provided in any one of opposing end surfaces of the coupler ring and the inner ring, whereby the coupler ring is arranged away from a seal member. Accordingly, it is possible to avoid an interference of the coupler ring with the seal member.

Abstract: The present invention provides a rolling bearing device for vehicles capable of detecting a change in magnetism with high accuracy. A rolling bearing device H for vehicles in accordance with the present invention includes a rolling bearing 13 having an inner ring 11, which is a rotating ring, and an outer ring 12 , which is a fixed ring, and rolling elements 3 and 4 interposed between both of the races 11 and 12; a magnetized element 14; a magnetic sensor 15; and a cover 16. The cover 16 is formed by demagnetizing a nonmagnetic material having being pressed.

Abstract: A wheel bearing device of the invention includes a flanged shaft member that includes a shaft portion to which a rolling bearing is assembled, a fitting shaft portion that is formed on one end side of the shaft portion and that is fitted to a center hole of a wheel, and a plurality of flange portions that extend radially outward on an outer peripheral surface located between the shaft portion and the fitting shaft portion and each of which has a bolt hole in which a hub bolt for fastening the wheel is arranged. Each flange portion is formed by side extrusion when a forged recess is formed at a center of an end surface of the fitting shaft portion by cold forging.

Abstract: A cover member includes a metallic cover main body having a lid portion and a cylindrical portion and an elastic covering material which covers outer circumferential surfaces of the lid portion and the cylindrical portion. In a state resulting before the cover member is fitted in a one end side opening of an outer ring of a rolling bearing, of the elastic covering material, an outside diameter dimension of a cylindrical portion elastic layer which covers the outer circumferential surface of the cylindrical portion is set to be larger than an inside diameter dimension of an inner circumferential surface of the one end side opening. In an attached state in which the cover member is fitted in the outer ring, the cylindrical portion elastic layer is elastically compressed to thereby be brought into close contact with the inner circumferential surface of the one end side opening of the outer ring.

Abstract: A sealing device is mounted in an annular space defined between an inner member and an outer member which rotate relative to each other. The sealing device includes a slinger which has a cylindrical portion which is press fitted on or in one of the inner member and the outer member and an annular plate portion, and a seal main body which has a core metal having a cylindrical portion which is press fitted in or on the other of the inner member and the outer member and an annular plate portion and a seal member fixed to the core metal. A lip for closing a space between the annular plate portion of the slinger and the cylindrical portion of the core metal is provided on the slinger or the seal main body.

Abstract: An outer ring shaft portion which is extended integrally from an end face of an outer ring of a constant velocity joint is fittingly inserted into an inside hole in a hub shaft of a wheel hub, so that the wheel hub and the constant velocity joint are coupled to each other. Internal splines and external splines are formed on an inner circumferential surface of the inside hole in the hub shaft and an outer circumferential surface of the outer ring shaft portion in such a manner as to mesh with each other. Side face splines are formed on end face of the hub shaft and an end face of the outer ring of the constant velocity joint. The wheel hub and the constant velocity joint are connected together in such a manner that torque can be transmitted therebetween.

Abstract: A rolling bearing assembly for a wheel includes: an inner ring member in which an inner ring raceway surface is formed on an outer peripheral surface of the inner ring member; an outer ring member having a fitting tubular portion on the inboard side that is fitted into an attachment hole of a vehicle body member, and an outer ring raceway surface is formed on an inner peripheral surface of the outer ring member; a plurality of rolling elements disposed between the inner and outer ring raceway surfaces; and a cage that holds the plurality of rolling elements. The bore diameter B of the fitting tubular portion of the outer ring member is smaller than the diameter C of a circumscribed circle of the rolling elements.

Abstract: A rolling bearing device for a wheel includes: an inner member; an outer member disposed around an outer peripheral surface of the inner member via rolling elements; and a wheel mounting flange formed on an outer peripheral surface of the inner member or the outer member. A predetermined number of bolt holes are formed in a peripheral edge portion of the wheel mounting flange along a circumferential direction, and a shape between adjacent ones of the bolt holes is constituted by a straight line or a curved line located radially outwardly of a pitch circle diameter of the bolt holes in an outer shape of the wheel mounting flange.

Abstract: It is a cage that is formed of a resin and that holds balls serving as rolling elements. The cage includes an annular base portion, and a plurality of claw portions that are formed to be arranged at constant intervals on the circumference of the base portion and to protrude therefrom. A pocket for accommodating the ball is formed between each pair of adjacent ones of the claw portions. In the resin cage for a ball bearing, thinning recesses are formed in end parts 11a of the claw portions and a rear surface of the base portion, respectively.

Abstract: The invention seeks to provide a rotor for use in rotary encoder, which is increased in magnetic intensity and mechanical strength thereby achieving exact detection of rotation speed. A corner portion formed between a cylindrical portion 21 and a mounting flange 22 of a core 20 constitutes a protrusion 23 unitized with the cylindrical portion and the mounting flange, protruded from axial one end of the cylindrical portion 21 and opened toward the axial other end thereof. A part of a pulser ring 31 is disposed in the protrusion 23.