Abstract: A bearing device for a wheel prevents backlash in a circumferential direction and has excellent workability for connecting a hub wheel and an outer joint member of a constant velocity universal joint. The bearing device includes a recess-projection fitting structure in which the hub wheel and a shaft section, which is fitted in a hole of the hub wheel of the outer joint member of the constant velocity universal joint, are unitized together. In the recess-projection fitting structure, entire fitting regions among projections on the outer surface of the shaft section of the outer joint member and recesses, which fit on the projections, are brought into intimate contact with each other.

Abstract: A rolling bearing includes rolling elements incorporated between an outer race and an inner race, a resin seal ring covering the opening of at least one end of the bearing space, and a filter covering an oil hole formed in the seal ring for capturing foreign matter contained in lubricating oil. The filter and the resin seal ring are integrated by insert molding. The filter and the seal ring are made of the same material. An annular lip portion, which is separate from the seal ring, is in contact with the outer race. An engaged portion provided on the radially inner side of the seal ring is engaged in a recess formed in the inner race such that, during thermal expansion of the seal ring, the engaged portion is engaged such that the seal ring is movable in the radial direction relative to the inner race.

Abstract: A recess-projection fitting structure includes projections extending in an axial direction on an outer diameter surface of a shaft section of an outer joint member or an inner diameter surface of a hole of a hub wheel, press-fitting the projections in another of the outer diameter surface and the inner diameter surface along the axial direction, and forming recesses brought into contact and fitted with the projections by press fitting in the other of the outer diameter surface and the inner diameter surface, the projections and the recesses being held in contact with each other through intermediation. An outer member is fitted in a hole of a knuckle of a vehicle. Annular grooves are formed respectively in an outer peripheral surface of the outer member and an inner peripheral surface of the hole of the knuckle, and a snap ring is engaged with both the annular grooves.

Abstract: A bearing device for a wheel suppresses backlash in a circumferential direction, has excellent coupling workability with a hub wheel and an outer joint member of a constant velocity universal joint, and has excellent strength owing to stable fitting between the hub wheel and the outer joint member. Projecting portions extending in an axial direction are provided on one of an outer surface of a shaft section of the outer joint member and an inner surface of a hole portion of the hub wheel. The projecting portions are press-fitted into the other along the axial direction, and recessed portions are formed in the other through press-fitting of the projecting portions. Thus, a recess-projection fitting structure is formed, in which the projecting portions and the recessed portions are held in close contact with each other through an entire region of fitting contact regions therebetween.

Abstract: A recess-projection fitting structure includes projections extending in an axial direction on an outer diameter surface of a shaft section of an outer joint member or an inner diameter surface of a hole of a hub wheel, press-fitting the projections in another of the outer diameter surface and the inner diameter surface along the axial direction, and forming recesses brought into contact and fitted with the projections by press fitting in the other of the outer diameter surface and the inner diameter surface, the projections and the recesses being held in contact with each other through intermediation. An outer member is fitted in a hole of a knuckle of a vehicle. Annular grooves are formed respectively in an outer peripheral surface of the outer member and an inner peripheral surface of the hole of the knuckle, and a snap ring is engaged with both the annular grooves.

Abstract: A bearing device for a wheel suppresses backlash in a circumferential direction, has excellent coupling workability with a hub wheel and an outer joint member of a constant velocity universal joint, and has excellent strength owing to stable fitting between the hub wheel and the outer joint member. Projecting portions extending in an axial direction are provided on one of an outer surface of a shaft section of the outer joint member and an inner surface of a hole portion of the hub wheel. The projecting portions are press-fitted into the other along the axial direction, and recessed portions are formed in the other through press-fitting of the projecting portions. Thus, a recess-projection fitting structure is formed, in which the projecting portions and the recessed portions are held in close contact with each other through an entire region of fitting contact regions therebetween.

Abstract: A constant velocity universal joint having a recess-projection engagement configuration in which backlash at a shaft connecting region does not easily occur, and an inner joint component and a shaft can he firmly connected. hi the constant velocity universal joint, the inner joint component and the shaft (5) fitted into an axis hole (22) of the inner joint component are connected by die recess-projection engagement configuration. Engagement contacting regions (38) of projections (35) and recesses (36) corresponding thereto are in close contact over the whole region.

Abstract: A bearing device for a wheel has minimized circumferential play and allows a hub ring and an outer joint member of a constant velocity universal joint to be connected with excellent workability. Axially extending projections are formed on either one of the outer diameter surface of a shaft of the outer joint member and the inner diameter surface of a hole of the hub ring, and the projections are axially press fitted into the other. Recesses fitted in an intimate contact manner onto the projections are formed in the other. Thus, a recess/projection fitting structure is formed. In the structure, the entire fitting/contact portions of the projections and the recesses are in intimate contact with each other. Further, a shaft come-out prevention structure is provided between the shaft of the outer joint member and the inner diameter surface of the hub ring.

Abstract: A wheel bearing device suppresses backlash in the circumferential direction and has excellent workability in connecting a hub wheel and an outer joint component of a constant velocity universal joint. The wheel bearing device has a stem shaft of an outer joint component of a constant velocity universal joint fitted into a hole section of a hub wheel that is integrated with the hub wheel by a projection and recess mating structure. In the projection and recess mating structure, an overall recess mating area of a projection is in close contact with a corresponding recess.

Abstract: A joint assembly has a pair of constant velocity universal joints and a connecting drive shaft. A cover unit protects the constant velocity universal joints and prevents hanging down of the joints under their own weight. The unit cover is arranged to cover the outer circumferential surfaces of the pair of constant velocity universal joints and boots. The unit cover is formed from elastomer material by injection molding. The cover unit inner circumferential surface has a configuration corresponding to the outline configurations of the pair of constant velocity universal joints and the boots.

Abstract: A joint assembly has a pair of constant velocity universal joints and a connecting drive shaft. A cover unit protects the constant velocity universal joints and prevents hanging down of the joints under their own weight. The unit cover is arranged to cover the outer circumferential surfaces of the pair of constant velocity universal joints and boots. The unit cover is formed from elastomer material by injection molding. The cover unit inner circumferential surface has a configuration corresponding to the outline configurations of the pair of constant velocity universal joints and the boots.

Abstract: Provided are a low-cost wheel bearing device and axle module which are manufactured by small work man-hours and assemblyman-hours and at lower component replacement cost for maintenance and repairing. A recess-projection fitting structure is configured by providing projections extending in an axial direction on any one of an outer diameter surface of a shaft section of an outer joint member and an inner diameter surface of a hole of a hub wheel, press-fitting the projections in another of the outer diameter surface and the inner diameter surface along the axial direction, and forming recesses brought into close contact and fitted with respect to the projections by this press fitting in the another of the outer diameter surface and the inner diameter surface, the projections and the recesses being held in close contact with each other through intermediation of entire fitting contact regions. An outer member is fitted in a hole of a knuckle of a vehicle with a predetermined fit.

Abstract: Provided is a bearing device for a wheel capable of suppressing a backlash in a circumferential direction, excellent in coupling workability of a hub wheel and an outer joint member of a constant velocity universal joint, and excellent in strength owing to stable fitting between the hub wheel and the outer joint member of the constant velocity universal joint. An axle module using such bearing device for a wheel is also provided. Projecting portions extending in an axial direction are provided on one of an outer surface of a shaft section of the outer joint member and an inner surface of a hole portion of the hub wheel. The projecting portions are press-fitted into the other along the axial direction, and recessed portions are formed in the other through press-fitting of the projecting portions.

Abstract: A wheel support bearing assembly, in which rust preventive treatment is conducted to a pilot portion of a hub axle thereof to thereby increase the productivity and the reliability, is provided. This wheel support bearing assembly includes an outer member having rolling surfaces, an inner member having rolling surfaces opposed to the rolling surfaces of the outer member, and rows of rolling elements interposed between those opposed rolling surfaces. One of the outer and inner members that serves as a rotating member includes a hub axle having a wheel mounting hub flange and a cylindrical pilot portion protruding on an outboard side from a root portion of the hub flange for guiding a brake rotor and a wheel, both fitted to the hub flange. A coating layer of ultraviolet curable coating material is formed on a peripheral surface of the pilot portion.

Abstract: Provided is a bearing device for a wheel that can realize prevention of a backlash in a circumferential direction and is excellent in workability of connection of a hub wheel and an outer joint member of a constant velocity universal joint. Further, provided is a bearing device for a wheel that can prevent deterioration in NVH characteristics, which is caused by the backlash occurring in a joint section between the hub wheel and the constant velocity universal joint or between an outer member and a knuckle, and can perform rotation torque transmission with high accuracy. The bearing device includes a recess-projection fitting structure (M) in which the hub wheel (1) and a shaft section (12), which is fitted in a hole (22) of the hub wheel (1) of the outer joint member of the constant velocity universal joint (3) are unitized together.

Abstract: A bearing device for a wheel, in which circumferential play is minimized and in which a hub ring and an outer joint member of a constant velocity universal joint can be connected with excellent workability. Axially extending projections (35) are formed on either one of the outer diameter surface of a shaft (12) of the outer joint member and the inner diameter surface (37) of a hole (11) of the hub ring (1), and the projections (35) are axially press fitted into the other. Recesses (36) fitted in an intimate contact manner onto the projections (35) are formed in the other. Thus, a recess/projection fitting structure (M) is formed. In the structure (M), the entire fitting/contact portions (38) of the projections (35) and the recesses (36) are in intimate contact with each other. Further, a shaft come-out prevention structure (M1) is provided between the shaft (12) of the outer joint member and the inner diameter surface of the hub ring (1).

Abstract: A joint assembly has a secured type constant velocity universal joint, a slide type constant velocity universal joint, and substantially cylindrical elastomer unit covers. The secured type constant velocity universal joint includes one outer joint member formed with a plurality of curved and axially extending first track grooves on its inner circumference. A joint inner ring is formed on its outer circumference with second track grooves opposite to the first track grooves. Torque transmitting balls are contained within ball tracks formed by the first and second track grooves. A cage rollably holds the torque transmitting balls within the ball tracks. A drive shaft has one end connected to the joint inner ring. A boot is mounted on the drive shaft and on an outer circumference at an opened side of the one outer joint member. The slide type constant velocity universal joint includes a boot mounted on the drive shaft and on an outer circumference at an opened side of the outer joint member.

Abstract: A joint assembly has a pair of constant velocity universal joints and a connecting drive shaft. A cover unit protects the constant velocity universal joints and prevents hanging down of the joints under their own weight. The unit cover is arranged to cover the outer circumferential surfaces of the pair of constant velocity universal joints and boots. The unit cover is formed from elastomer material by injection molding. The cover unit inner circumferential surface has a configuration corresponding to the outline configurations of the pair of constant velocity universal joints and the boots.

Abstract: A wheel bearing apparatus for a driving wheel is formed as a unit of a wheel hub, a double row rolling bearing and a constant velocity universal joint. The double row rolling bearing has an outer member with a body mounting flange mounted on a knuckle and double row outer raceway surfaces. An inner member includes the wheel hub and an outer joint member of the constant velocity universal joint. The wheel hub has an inner raceway surface corresponding to one of the double row outer raceway surfaces. The outer joint member has another inner raceway surface corresponding to the other of the double row outer raceway surfaces. Double row rolling elements are rollably arranged between the outer and inner raceway surfaces. Seals are mounted in an annular space opening formed between the outer member and the inner member. A sensor is fit into a mounting aperture formed in the knuckle. A pulser ring is mounted on the outer circumferential surface of the outer joint member.

Abstract: The present invention provides a wheel bearing device that can suppress backlash in the circumferential direction and has excellent workability in connecting a hub wheel and a outer joint component of a constant velocity universal joint. The wheel bearing device according to the present invention is that in which a stem shaft 12 of an outer joint component of a constant velocity universal joint 3 fitted into a hole section 22 of a hub wheel 1 is integrated with the hub wheel 1 by a projection and recess mating structure M. In the projection and recess mating structure M, an overall recess mating area 38 of a projection 35 is in close contact with a corresponding recess 36.