Disclosed are a drive wheel bearing and a method of manufacturing the same. The drive wheel bearing includes: a wheel hub which is integrally and rotatably fastened to a vehicle wheel; an inner race which is fitted with the wheel hub and integrally and rotatably coupled to the wheel hub; an outer race which rotatably supports the wheel hub and the inner race in a state in which the wheel hub and the inner race are fitted into the outer race; rolling elements which are interposed between the outer race and the wheel hub and between the outer race and the inner race; and a constant velocity joint which is integrally and rotatably connected to the wheel hub or the inner race by means of a face spline in order to receive power from an engine and transmit the received power to the vehicle wheel, in which the face spline of each of the wheel hub and the constant velocity joint have a structure in which teeth having the same size and tooth grooves having the same size radially extend, and are alternately and continuously arranged in a circumferential direction, and as a result, it is possible to smoothly transmit rotational power of the engine to the vehicle wheel through the wheel bearing.

A wheel drive unit for a vehicle is provided. The wheel drive unit includes: a connecting member that is separably coupled to a constant velocity joint and fixes a bearing to the constant velocity joint when mounted on the constant velocity joint; a hub housing that can be opened or closed by a hub cap and forms an inner space where the constant velocity joint is disposed and coupled with the hub housing by a bearing. In particular, the hub cap allows the connecting member to be separated from or mounted on the constant velocity joint when the hub cap is separated from the hub housing such that inner components of a wheel drive unit can be easily replaced and repaired.

An assembling method includes fitting an entire range of the guide portion to the stem section with a gap therebetween, and inserting a bolt from an outboard side through a bolt insertion hole formed in the hub wheel. In this state, a maximum inclination angle of the bolt with respect to the hub wheel is set to be larger than a maximum inclination angle of the outer joint member with respect to the hub wheel. The method also includes connecting the bearing and the constant velocity universal joint to each other by threadedly engaging and fastening the bolt into a bolt hole formed in the stem section.

A bearing device for a wheel has a stem shaft of an outer joint member of a constant-velocity universal joint fit and inserted in a hole of a hub wheel, the stem shaft and hub wheel being coupled through an intermediation of a recess-projection fitting structure. Projections extending in an axial direction are provided on one of the stem shaft and an inner diameter surface of the hole of the hub wheel. The projections are press-fit into another of the stem shaft and the inner diameter surface of the hole along the axial direction. Recesses that adhere to and fit the projections are formed in the other. An end on an inboard side of the hub wheel is caulked to an outer diameter side to form a caulking section and preload is applied to a roller bearing by the caulking section.

A bearing device for a wheel has a wheel bearing including inner and outer rings, a hub wheel, and balls between outer raceway surfaces of the outer ring and inner raceway surfaces of the hub wheel and the inner ring. A stem section is fitted into an inner diameter of the hub wheel to couple a constant velocity universal joint to the wheel bearing through a screw fastening structure so that a shoulder portion of an outer joint member abuts against a crimped portion of the hub wheel. Projecting portions formed on the stem section are press-fitted into the hub wheel having depressed portions formed to interfere with the projecting portions, and a shape of the projecting portions is transferred to the hub wheel providing a projection and depression fitting structure in which the projecting and depressed portions are in close contact at an entire fitting contact portion therebetween.

A motor vehicle drive wheel assembly comprising a fixed subassembly comprising two outer raceways; a rotating subassembly comprising a wheel hub, two inner raceways and two rows of rolling bodies that are arranged in two pitch planes PP1 and PP2. One of the inner raceways is formed on a rolling bearing ring that bears against a transmission bowl at an annular contact interface situated between the two pitch planes.

A wheel hub arrangement for a motor vehicle, provided with a hub which is rotatably mounted by a wheel bearing for the attachment of a wheel. A shaft, which is formed separately from the wheel hub, is non-rotatably coupled to the wheel hub. At the same time a first receiving section of a sealing receptacle is formed in the wheel hub in which is arranged a shaft, in which a sealing device is arranged which engages a second receiving section of the sealing receptacle formed in the axial direction with respect to an axis of rotation of the wheel hub, adjacent to the first receiving section.

A wheel bearing arrangement, preferably for a motor vehicle, with a cardan shaft, a wheel hub, a screw with a screw head, and a pretensioning element. The wheel hub is connected to the cardan shaft by the screw. The pretensioning element is arranged and/or braced between the screw head, preferably a head underside of the screw head, and the wheel hub.

A hub-bearing assembly provided with a bearing unit and a rotatable rotor-hub. The bearing unit includes a stationary radially outer ring, a couple of rotatable radially inner rings, and a double row of rolling elements, wherein the rolling elements are interposed between the outer ring and the inner rings, whose centers are located along a first circle having a radius, with respect to a symmetry axis of the assembly. The rotor-hub is made of a light alloy. A tubular portion is assembled on top of the radially inner rings. The tubular portion is steadily fixed a flange portion, axially external and includes a plurality of fixing holes. Axes of the fixing holes are located along a second circle defined by a radius respective to the symmetry axis of the assembly. The radius of the first circle (rolling elements) is greater than the radius of the second circle (fixing holes).

A hub-integrated-type constant-velocity joint device in which one hub housing (40) functions as both an outer race of a constant velocity joint and a wheel hub combining a disc (2) of a wheel and a knuckle (3). In this configuration, a boot sealing portion (110) integrally formed at a boot 50 is inserted in a gap (35) between an inner race (32) and an outer race (33) of a bearing (30), thereby functioning as an inner seal closing up the gap between the inner race (32) and the outer race (33).