Ntn Corporation

Koji Kametaka

Hisashi Ohtsuki

Takayuki Norimatsu

Eiji Tajima

Motoharu Niki

Akio Sakaguchi

Eiji Funahashi

Katsumi Sugiyama

Toru Takahashi

Kentarou Nishikawa

Kenro Adachi

Yujiro Ono

Kentaro Ikki

A wheel support bearing assembly includes rolling elements interposed between double row rolling surfaces of outer and inner members, which are opposed to each other. Electronic components including a plurality of the sensor units, a signal processing IC for processing respective sensor output signals thereof and a signal cable for transmitting the processed output signal to the outside of the bearing assembly are arranged inwardly of an annular protective covering to provide an annular sensor assembly. The sensor assembly is fitted to a peripheral surface of a stationary member in a fashion coaxial with the stationary member.

Sensor-equipped bearing for wheel

A wheel bearing assembly is provided which has a rotating speed sensor unit which includes a seal for preventing entry of foreign matter and which takes up little space and thus can be mounted on the wheel bearing assembly without increasing the axial dimension of the fixed member of the wheel bearing assembly. The assembly includes a fixed member fixed to a vehicle body, and a rotary member rotatably supported in the stationary member through a bearing and mounted to a vehicle wheel. An annular sensor is fitted to a knuckle, which is a part of the fixed member, on the inboard side of the bearing. A sensor seal is fitted to the annular sensor and has a seal lip kept in slide contact with a seal land formed on a constant-velocity joint outer ring, which is a part of the rotary member, to define a sealed space on the inboard side of the bearing. An encoder is mounted on a bearing inner ring, which is a part of the rotary member, in the sealed space. The sensor element is disposed in the sealed space, opposite the encoder.

Rotating speed sensor unit and wheel bearing assembly carrying the same

A wheel bearing includes a sealing devicepositioned between inner and outer membersand. This sealing deviceincludes an elastic member, which eventually forms an encoder grid and is provided on a first annular sealing plate. A second annular sealing plateis provided with sealing lipsto. An engagementbetween a cylindrical wallof the first annular sealing plateand the inner memberis provided with an elastic membermade of a material dissimilar to that for the elastic material. This elastic membermay be a rubber coated layer, resin paint layer, a thin film of adhesive material or a ring-shaped rubber member. Thereby, any possible ingress of water across an engagement surface of the annular sealing plate is prevented, accompanied by increase of the lifetime of the bearing, with no problem associated with separation and displacement of the annular sealing plates. The magnetic flux density can also be easily secured.

Wheel bearing and sealing device therefor

A wheel bearing includes a sealing device positioned between inner and outer members and . This sealing device includes an elastic member , which eventually forms an encoder grid and is provided on a first annular sealing plate . A second annular sealing plate is provided with sealing lips to . An engagement between a cylindrical wall of the first annular sealing plate and the inner member is provided with an elastic member made of a material dissimilar to that for the elastic material . This elastic member may be a rubber coated layer, resin paint layer, a thin film of adhesive material or a ring-shaped rubber member. Thereby, any possible ingress of water across an engagement surface of the annular sealing plate is prevented, accompanied by increase of the lifetime of the bearing, with no problem associated with separation and displacement of the annular sealing plates. The magnetic flux density can also be easily secured.

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Iwata, Japan

Koji Kametaka