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AssigneeNtn Corporation
InventorsEiji Tajima, Shigeaki Fukushima, Akira Torii, Hisashi Ohtsuki
Estimating the term…
Reliable wheel bearing assemblies are proposed which need no troublesome runout adjustment at a car assembling factory. There are provided wheel bearing assemblies comprising an outer member having two raceways on an inner circumferential surface thereof, an inner member having raceways each provided opposite the two raceways of the outer member, and rolling elements arranged in two rows between the outer and inner members. One of the outer and inner members is provided with a wheel mounting flange. The runout of the wheel mounting flange is restricted within a predetermined value, and a brake rotor is fixed to one side of the wheel mounting flange. Different methods for minimizing the runout are proposed.
A wheel bearing assembly comprising an outer member having two raceways on an inner peripheral surface thereof, an inner member having two raceways formed thereon so as to be opposite to said two raceways on said outer member, and rolling elements arranged in two rows between said outer member and said inner member, said inner member being formed with a wheel mounting flange having bolt holes for receiving hub bolts, wherein at least one of said raceways formed on said inner member on the side near said wheel mounting flange is formed directly on said inner member, and wherein a heat-affected layer of a hardened layer formed on said raceway on the side near said wheel mounting flange is restricted so as not to reach said bolt holes of said wheel mounting flange.
A wheel bearing assembly comprising an outer member having two raceways on an inner peripheral surface thereof, an inner member having two raceways formed thereon so as to be opposite to said two raceways on said outer member, and rolling elements arranged in two rows between said outer member and said inner member, one of said outer member and said inner member being formed with a wheel mounting flange, a brake rotor fixing surface being formed on one side of said wheel mounting flange, wherein said brake rotor is mounted to one side of said wheel mounting flange and said one side of said wheel mounting flange has a finish with a finer surface roughness than the other side.
A wheel bearing assembly comprising a wheel bearing and a constant-velocity joint, said wheel bearing comprising an outer member having two raceways on an inner peripheral surface thereof, an inner member having two raceways formed thereon so as to be opposite to said two raceways on said outer member, and rolling elements arranged in two rows between said outer member and said inner member, said inner member being formed with a wheel mounting flange which is formed with a brake rotor fixing surface on one side thereof, said constant-velocity joint comprising an outer ring having a shoulder portion on which an end face of said inner member of said wheel bearing abuts, and a stem coupled to said inner member, wherein the perpendicularity and the runout variation of one side of said shoulder portion on which the end face of said inner member of said wheel bearing abuts, relative to the axis of said stem are restricted within predetermined values.
Dependencies are inferred from the claim text.