Nsk Corporation

Yuji Nakamura

Hiroya Miyazaki

Hideo Ouchi

Masahiro Hosoda

Junshi Sakamoto

Naoki Mitsue

Shuichi Ishikawa

Takeyasu Kaneko

Yasunori Kawase

Shigeru Endo

Ikunori Sakatani

Toshiaki Maeda

Kouichi Morita

Hirohide Ishida

Provided is a hub unit bearing wherein a cover can be firmly fitted with an outer ring member, and it is difficult for foreign matter to enter inside through a water drainage hole formed in the cover. The cover that covers the inside end section in the axial direction of the hub unit bearing includes a disk section, a small-diameter cylindrical section bent in the axial direction from the outer perimeter edge section of the disk section and a large-diameter cylindrical section. A cut and raised section that is cut and raised toward the inside in the radial direction is formed in the small-diameter cylindrical section, and a water drainage hole that passes through from inside to outside the cover is provided in the portion that is cut and separated from the small-diameter cylindrical section.

Hub unit bearing

There is provided a structure capable of sufficiently securing sealing performance by a cap (). In a state where a fitting insert () formed of a nonmagnetic material having a bottomed cylindrical shape is fixed to an inner diameter side of a cap cylindrical part () constituting a cap body () formed of a synthetic resin having a bottomed cylindrical shape, an axially outboard end opening of a through-hole () formed in a cap bottom part () of the cap body () is closed by an axially inboard surface of an insert bottom part () of the fitting insert (). An outer circumferential surface of an insert cylindrical part () of the fitting insert () is directly fitted into and fixed to an inner circumferential surface of an axially inboard end of an outer ring ().

Rolling bearing unit with rotational speed detecting device

A sensor for detecting a speed of rotation is an active sensor, a sensing portionof the sensor directly faces the magnetic encoderwithout interposition between it and the encoder, and a harness(or connector) of the sensorfor detecting the speed of rotation is taken out of a gap between a knuckle N and a constant velocity universal joint

Hub unit for driving wheel

Respective constituent members of a wheel bearing unitare assembled and also a coveris fixed to an inner end portion of an outer ring. The wheel bearing unitis fitted to a turning machinein a state that a space in which an encoderis provided is sealed tightly from an outside by fitting a stop pluginto an insertion holeprovided in the cover. A top end portion of a rotating shaftof a turning machineis engaged with an engaged concave portionprovided to a hub. A turning process is applied to an outer side surface of a rotary flangewhile turning the hubaround the outer ringby the rotating shaft, and thus the outer side surface is processed in predetermined shape and dimension.

Bearing unit for wheel and method of manufacturing the bearing unit

A combination seal ring with an encoder for use to close off the opening of the space between a fixed ring and a rotational ring and to detect a rotational speed of the rotational ring, comprising a seal ring secured to the fixed ring, a metal slinger secured to the rotational ring, and an encoder of a rubber magnet secured to the slinger, the seal ring comprising a metal core secured to the fixed ring, and a fixed ring portion bent toward the rotational ring from the fixed cylindrical portion; and a resilient member bonded all around the metal core, the slinger comprising a rotational cylindrical portion secured to the rotational ring, and a rotational ring portion bent toward the fixed ring from the rotational cylindrical portion, the encoder bonded on the rotational circular ring portion, opposite to the seal lips by a molding process, the end rim of the encoder being short at least 0.2 mm of the end rim of the rotational circular ring portion.

Combination seal ring with encoder

A bearing unit for a wheel has a rotary ring whose raceway surface is hardened by a thermal process. In this bearing unit, the side surface of a fitting flange for fixedly joining a rotary body for braking and a wheel, is formed by working in a predetermined configuration after the raceway surface of the rotary ring has been subjected to the thermal process. The raceway surface of the rotary ring is worked in a predetermined configuration and dimensions on the basis of the side surface of said fitting flange. This bearing unit can restrain disagreeable noises and vibration from being caused upon braking.

Bearing unit for wheel and manufacturing method thereof

A rotation-speed sensor device is provided to comprise an encoder supported by a rotating race of a rolling bearing unit for vehicle wheel support to be concentric with the rotating race and having a detected portion the characteristics of which are alternately changed in a circumferential direction, a rotation detection sensor supported by a non-rotating member on the vehicle chassis side and having a detecting portion facing the detected portion to produce a detection signal, a wireless transmission device for sending the detection signal from the rotation detection sensor to a controller provided on the vehicle chassis side, and a self-diagnosis circuit to judge whether there is an error or not in the rotation detection sensor.

Rotation-speed sensor device

Combination seal ring encoder

A rolling bearing unit with a rotation speed detection instrument having a hub with a plurality of inner race tracks, an outer race formed of steel material with a plurality of outer race tracks, rolling elements between the tracks, and encoder on the hub and a sensor supported in a mounting hole in the outer race. A hardened layer is formed on the inner surface of the outer race and each portion where the outer race tracks are formed. An area of the inner surface around the mounting hole is not hardened.

Rolling bearing unit with rotation speed detection instrument for use in cars and method for working outer race for use in this bearing unit

A bearing unit for a wheel has a rotary ring whose raceway surface is hardened by a thermal process. In this bearing unit, the side surface of a fitting flange for fixedly joining a rotary body for braking and a wheel, is formed by working in a predetermined configuration after the raceway surface of the rotary ring has been subjected to the thermal process. The raceway surface of the rotary ring is worked in a predetermined configuration and dimensions on the basis of the side surface of the fitting flange. This bearing unit can restrain disagreeable noises and vibration from being caused upon braking.

A rolling bearing unit comprising a rotatable race having an inner peripheral surface formed with an outer ring raceway and an outer peripheral surface formed with a rotating flange, a stationary race having an outer peripheral surface formed with an inner ring raceway, a plurality of rolling members between the outer ring raceway and the inner ring raceway, an annular encoder of multi-pole magnet supported in a concentric relation with the rotatable race to have characteristics alternately changed with a uniform interval in the circumferential direction and having an outer diameter larger than the outer diameter of the rotatable race, and a metal ring for supporting the encoder onto the rotatable race and having a cylindrical portion provided to enclose the encoder.

Rolling bearing unit with encoder

A rolling bearing unit with a rotation speed detection instrument having a hub with a plurality of inner race tracks, an outer race formed of steel material with a plurality of outer race tracks, rolling elements between the tracks, and encoder on the hub and a sensor supported in a mounting hole in the cuter race. A hardened layer is formed on the inner surface of the outer race and each portion where the outer race tracks are formed. An area of the inner surface around the mounting hole is not hardened.

Rolling bearing unit encoder

A rolling bearing with seal has a stationary inner race and rotatable outer race, a first sealing ring faced to the external space and mounted to the inner peripheral end portion of the outer race which rotates during use, so that even if foreign matter in the external space such as muddy water adheres to the outside surface of the first sealing ring, it is slung off by the centrifugal force, while a second sealing ring faced to the balls and mounted to the outer peripheral end portion of the inner race, whereby it is possible to nearly completely prevent the muddy water from penetrating into the space where the rolling elements are located.

Rolling bearing with seal

A rolling bearing unit having a tone wheel and a seal device which has an elastic seal member and a core metal to reinforce the elastic seal member to seal the space where the rolling members are provided, the tone wheel comprising an annular multi-pole magnet with South and North poles alternately arranged in a circumferential direction an supported by the generally annular seal ring.

Growing community of inventors

Fujisawa, Japan

Yuji Nakamura