Koyo Seiko Company, Ltd.

Sharp Kabushiki Kaisha Corporation

Jtekt Corporation

Kanichi Kouda

Motoshi Kawamura

Kazutoshi Toda

Tomohiro Ishii

Yoshifumi Shige

Nobuyuki Seo

Minoru Sentoku

Naoki Morimura

Fujio Harumi

Kunihiko Yokota

Akiyuki Suzuki

Hiroki Matsuyama

Hirofumi Dodoro

Toshirou Fukuda

Noboyuki Seo

The present invention relates to a bearing device for supporting a pinion shaft so as to freely rotate with respect to a case. The bearing device comprises a first tilt-contact rolling bearing provided on the connecting-flange-side outer peripheral surface of the pinion shaft and a second tilt-contact rolling bearing formed from an angular ball bearing provided on the pinion-gear-side outer peripheral surface of the pinion shaft, wherein lines of action of the first and second tilt-contact rolling bearings intersect with one another on an outer diameter side, the connecting-flange-side end portion of the first tilt-contact rolling bearing and the pinion-gear-side end portion of the second tilt-contact rolling bearing are respectively sealed with seal members, a sealed space between the seal members is infilled with grease, and the connecting flange is fastened in the pinion-gear direction to thereby preload the first and second tilt-contact rolling bearings.

Bearing device for supporting pinion shaft

A wheel speed detector for detecting a relative rotating speed between an outer ring and an inner ring by means of a magnetic sensor in association with a magnetic ring. A stationary seal member is fixed to the stationary ring and a rotatable seal member is fixed to the rotatable ring. The seal members engage to seal a gap between the inner ring and the outer ring. The magnetic sensor is fixed to a radial inner surface of the stationary seal member and the magnetic ring is fixed to a radial outer or a radial inner surface of the rotatable seal member and surfaces of the magnetic ring other than that fixed to the radial inner surface of the rotatable seal member are covered with a seal lip.

Wheel speed detector having stationary seal member for mounting magnetic sensor

This wheel speed detector is constructed of a magnetic sensor and a magnetic ring and is integrated with the inside of a seal device. The magnetic ring constitutes a part (core bar) of the seal device. This arrangement can enable the compacting and reduction in the number of components and improve space saving and assembling workability.

Sealed wheel speed detector with rotating magnetic ring and stationary magnetic sensor

In a tapered roller bearing having an outer ring whose outside diameter is D, an inner ring whose inside diameter is d, and a plurality of tapered rollers whose pitch circle diameter is dm, a setting is provided such that a PCD parameter expressed by 2 dm/(D+d) is a value which falls within the range of 0.96 to 0.985.

Tapered roller bearing

According to this double row tapered roller bearing apparatus, an integral outer ring () is provided with oil vents () which extend from an inner peripheral face () in an area outward in an axial direction than a rolling face (B) on which an axially outward row of conical rollers () rolls and passes through an outer peripheral face (). Therefore, a portion of lubricating oil supplied from oil supply holes () in the integral outer ring () passes the oil vents () via the axially outward row of the conical rollers (), and will be returned to a space in a housing () by way of a channel () in the housing (). In conclusion, a circulating path of the lubricating oil through the outward row of the conical rollers () can be formed by the oil vents ().

Double row tapered rolier bearing apparatus

This ring speed detector is constructed of a magnetic sensor and a magnetic ring and is integrated with the inside of a seal device. The magnetic ring constitutes a part (core bar) of the seal device. This arrangement can enable the compacting and reduction in the number of components and improve space saving and assembling workability.

Compact wheel speed detector capable of saving space and improving workability

Growing community of inventors

Osaka, Japan

Kanichi Kouda