Abstract: A wheel bearing device includes a hub ring, a double-row bearing and a constant velocity universal joint which are unitized together. At least one of double-row inner raceways of the bearing and a wheel mounting flange are formed on a hub ring. The hub ring and a stem portion of a joint outer ring of the constant velocity universal joint are fitted through a torque transmission assembly, wherein a pilot member as a separate element having a wheel guide portion and a brake guide portion is fitted to a side-end portion of the wheel mounting flange of the hub ring, and the hub ring and the pilot member are fixed to the joint outer ring by swaging.

Abstract: A wheel bearing apparatus formed by a unit of a wheel hub, a double row rolling bearing and a constant velocity universal joint where the double row rolling bearing has an outer member formed with double row outer raceway surfaces on its inner circumferential surface. An inner member, including the wheel hub has a wheel mounting flange integrally formed at one end. One of the double row inner raceway surfaces are formed on the inner member and is arranged opposite to the double row outer raceway surfaces. A cylindrical portion axially extends from the wheel mounting flange. Also, the inner member includes an outer joint member of the constant velocity universal joint. The outer joint member is formed with the other of the double row inner raceway surfaces. The outer joint member has a shaft portion axially extending from the other double row inner raceway surface. Double row rolling elements are rollably arranged between the outer and inner raceway surfaces.

Abstract: A wheel bearing device includes a hub ring, a double-row bearing and a constant velocity universal joint wherein at least the hub ring and the double-row bearing are unitized together. The hub ring and constant velocity universal joint are fitted through a torque transmission assembly and are joined by a fastener in an axial direction. A clearance in a fit portion of the torque transmission assembly is prevented by a play prevention member.

Abstract: A bearing apparatus for a driving wheel of vehicle where the weight and size of the apparatus can be reduced and the durability can be improved with adopting plastic deformed connection between essential parts forming the apparatus. The bearing apparatus for a driving wheel of vehicle has a hub wheel, a constant velocity universal joint, and a double row rolling bearing which are assembled as a unit. One of the inner raceway surfaces is formed on the outer circumferential surface of the hub wheel. The other of the inner raceway surfaces is formed on the outer circumferential surface of the outer joint member. The hub wheel and the outer joint member are fitted with each other with one end surface being abutted against the shoulder of the outer joint member. The inner circumferential surface at the fitting portion of the hub wheel is formed with a hardened irregular portion. The hub wheel and the outer joint member are integrally connected via plastic deformation of the outer joint member.

Abstract: Provided is a method of manufacturing a bearing device for a wheel provided with: a hub wheel (2) having a flange (1) extending radially outward; a constant-speed universal joint (4) having an outer joint member (3) fixed to the hub wheel (2) ; an external member (5) disposed on outer periphery sides of the hub wheel (2) and the outer joint member (3); and rolling bodies (6) interposed between the external member (5) and the hub wheel (2) and between the external member (5) and the outer joint member (3), respectively. The method includes: assembling the hub wheel (2), the constant-speed universal joint (4), the external member (5), and the rolling bodies (6) to produce a subassembly body (S); and machining a mounting surface (21) of the flange (1) of the hub wheel (2) to which a brake rotor is attached, while the hub wheel (2) and the outer joint member (3) are rotated about an axis (O) of the subassembly body (S) with the external member (5) of the subassembly body (S) being fixed.

Abstract: A wheel bearing device having a unitized hub ring, double-row bearing and constant velocity universal joint with one of double-row inner raceways formed on the joint outer ring. An end portion of the joint outer ring is fitted to an outside periphery of the hub ring through serrated portions. The hub ring is plastically deformed and expanded from an inside diameter side toward an outside diameter side by pushing a steel ball into a through hole of the hub ring preventing play in the serrated portions by the diameter expansion. A surface-hardened layer is formed at least on a base portion of the wheel mounting flange.

Abstract: A wheel bearing device to ensure a sufficient durability and life even with the application of bending moment acting on the wheel bearing device. An outer joint member of a constant velocity joint is fitted into the inside of a wheel hub and a portion thereof is swaged radially outward by plastic deformation to unite the wheel hub and the outer joint member. The outer joint member includes a pilot part adjacent the plastically deformed portion, and the ratio of an inside diameter ?d2 of the pilot part to an inside diameter ?d1 of the plastically deformed portion is set 1.110 or less.

Abstract: A wheel bearing device is provided to prevent loosening of a hub ring and an outer joint ring that are fitted together. An irregular portion treated with hardening is formed on a fit face of the hub ring on an inside periphery of which the outer joint member is fitted. A low hardness portion of the outer joint member formed with hardness lower than that of the irregular portion is expanded in diameter to make it bite into the irregular portion. In this way the hub ring and the outer joint ring are unitized together.

Abstract: A bearing apparatus for a driving wheel of vehicle for rotatably supporting the driving wheel relative to a body of a vehicle has a wheel hub, integrally formed with a wheel mounting flange, a constant velocity universal joint and a double row rolling bearing assembled as a unit. A separate inner ring is press fitted onto a cylindrical portion of the wheel hub. An outer joint member of the constant velocity universal joint is fitted within the wheel hub. The bore surface of the wheel hub is formed with a hardened irregular portion. The wheel hub and the outer joint member are integrally connected with making the hardened irregular portion of the wheel hub bite into the outer circumferential surface at a fitting portion of the outer joint member by radially outwardly expanding the fitting portion of the outer joint member. The hardness of the bore surface of the fitting portion of the outer joint member is higher than that of the core portion of the fitting portion of the outer joint member.

Abstract: An outer joint member for a constant velocity joint is fitted to the inner periphery of a wheel hub, and the stem portion of the outer joint member that is located inside is plastically deformed in the radially outward direction in order to couple the wheel hub and the outer joint member. The ratio of the inner diameter ?dA before plastic deformation in the plastic deformation portion of the outer joint member and the inner diameter ?dB after the plastic deformation (?=?dB/?dA) is set in the range from 1.05 to 1.15 (1.05???1.15). In this way, high workability and joining strength can be achieved at a time in the swaging process in the radially outward direction.

Abstract: A compact bearing device for a drive wheel is provided, which removes backlash within the joint between a wheel hub and a constant velocity universal joint, and increases the rigidity of the bearing device. There is provided a drive wheel bearing device in which a wheel hub and a double-row bearing are integrated into a single unit, and an outer joint member of a constant velocity universal joint is engaged inside the unit via a serrated section. In this structure, at least one of the inner races of the double-row bearing is formed on a separate inner ring engaged onto the wheel hub, irregularities are formed on the outer peripheral surface of the wheel hub, and radial expansion swaging of the wheel hub is used to cause the irregularities to bite into the inner peripheral surface of the inner ring, thereby fastening the wheel hub and the inner ring together through a plastic deformation section.

Abstract: A wheel bearing device having a unitized hub ring, double-row bearing and constant velocity universal joint with one of double-row inner raceways formed on the joint outer ring. An end portion of the joint outer ring is fitted to an outside periphery of the hub ring through serrated portions. The hub ring is plastically deformed and expanded from an inside diameter side toward an outside diameter side by pushing a steel ball into a through hole of the hub ring preventing play in the serrated portions by the diameter expansion. A surface-hardened layer is formed at least on a base portion of the wheel mounting flange.

Abstract: In a drive wheel bearing assembly, a fixed type constant velocity universal joint is coupled to a wheel bearing, mounted to one end of an intermediate shaft, and a sliding type constant velocity universal joint, is coupled to a differential, mounted to the other end portion of the intermediate shaft. One end portion of a stub shaft is connected to an inner joint ring of the constant velocity universal joint via torque transmission portions; one end portion of the intermediate shaft is connected to the other end portion of the stub shaft via torque transmission portions. A threaded portion is formed on an outer diameter portion of either the intermediate or stub shaft; a nut member threadedly engages the threaded portion; and a keeper ring is fitted into annular grooves formed on the outer diameter portion of the intermediate shaft or the stub shaft and an inner diameter portion of the nut member allowing the nut member to rotate, but not move axially.

Abstract: A wheel bearing device is provided to prevent loosening of a hub ring and an outer joint ring that are fitted together. An irregular portion treated with hardening is formed on a fit face of the hub ring on an inside periphery of which the outer joint member is fitted. A low hardness portion of the outer joint member formed with hardness lower than that of the irregular portion is expanded in diameter to make it bite into the irregular portion. In this way the hub ring and the outer joint ring are unitized together.

Abstract: A wheel bearing device is provided to prevent loosening of a hub ring and an outer joint ring that are fitted together. An irregular portion treated with hardening is formed on a fit face of the hub ring on an inside periphery of which the outer joint member is fitted. A low hardness portion of the outer joint member formed with hardness lower than that of the irregular portion is expanded in diameter to make it bite into the irregular portion. In this way the hub ring and the outer joint ring are unitized together.

Abstract: A wheel bearing device to ensure a sufficient durability and life even with the application of bending moment acting on the wheel bearing device. An outer joint member of a constant velocity joint is fitted into the inside of a wheel hub and a portion thereof is swaged radially outward by plastic deformation to unite the wheel hub and the outer joint member. The outer joint member includes a pilot part adjacent the plastically deformed portion, and the ratio of an inside diameter &PHgr;d2 of the pilot part to an inside diameter &PHgr;d1 of the plastically deformed portion is set 1.110 or less.

Abstract: A wheel bearing device having a unitized hub ring, double-row bearing and constant velocity universal joint with one of double-row inner raceways formed on the joint outer ring. An end portion of the joint outer ring is fitted to an outside periphery of the hub ring through serrated portions. The hub ring is plastically deformed and expanded from an inside diameter side toward an outside diameter side by pushing a steel ball into a through hole of the hub ring preventing play in the serrated portions by the diameter expansion. A surface-hardened layer is formed at least on a base portion of the wheel mounting flange.

Abstract: An outer joint member for a constant velocity joint is fitted to the inner periphery of a wheel hub, and the stem portion of the outer joint member that is located inside is plastically deformed in the radially outward direction in order to couple the wheel hub and the outer joint member. The ratio of the inner diameter &PHgr;dA before plastic deformation in the plastic deformation portion of the outer joint member and the inner diameter &PHgr;dB after the plastic deformation (&Dgr;=(&PHgr;dB/&PHgr;dA) is set in the range from 1.05 to 1.15 (1.05≦&Dgr;≦1.15). In this way, high workability and joining strength can be achieved at a time in the swaging process in the radially outward direction.

Abstract: A bearing apparatus for a driving wheel of vehicle for rotatably supporting the driving wheel relative to a body of a vehicle has a wheel hub, integrally formed with a wheel mounting flange, a constant velocity universal joint and a double row rolling bearing assembled as a unit. A separate inner ring is press fitted onto a cylindrical portion of the wheel hub. An outer joint member of the constant velocity universal joint is fitted within the wheel hub. The bore surface of the wheel hub is formed with a hardened irregular portion. The wheel hub and the outer joint member are integrally connected with making the hardened irregular portion of the wheel hub bite into the outer circumferential surface at a fitting portion of the outer joint member by radially outwardly expanding the fitting portion of the outer joint member. The hardness of the bore surface of the fitting portion of the outer joint member is higher than that of the core portion of the fitting portion of the outer joint member.

Abstract: A bearing apparatus for a driving wheel of vehicle where the weight and size of the apparatus can be reduced and the durability can be improved with adopting plastic deformed connection between essential parts forming the apparatus. The bearing apparatus for a driving wheel of vehicle has a hub wheel, a constant velocity universal joint, and a double row rolling bearing which are assembled as a unit. One of the inner raceway surfaces is formed on the outer circumferential surface of the hub wheel. The other of the inner raceway surfaces is formed on the outer circumferential surface of the outer joint member. The hub wheel and the outer joint member are fitted with each other with one end surface being abutted against the shoulder of the outer joint member. The inner circumferential surface at the fitting portion of the hub wheel is formed with a hardened irregular portion. The hub wheel and the outer joint member are integrally connected via plastic deformation of the outer joint member.