Abstract: 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.

Abstract: A bearing unit for vehicle wheel support comprising a shaft having a mounting flange for vehicle wheel or suspension apparatus, a step portion formed on one end portion thereof, a first inner ring raceway directly formed thereon, and a crimped portion formed on the end side of the step portion, and an inner ring fitted onto the step portion and having a second inner ring raceway thereon, the shaft being quench hardened at least at the first inner ring raceway with the crimped portion kept as formed and without quench hardened, and the inner ring being fixed to the shaft by the crimped portion of the shaft.

Abstract: 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.

Abstract: A bearing unit for vehicle wheel support comprising a shaft having a mounting flange for vehicle wheel or suspension apparatus, a step portion formed on one end portion thereof, a first inner ring raceway directly formed thereon, and a crimped portion formed on the end side of the step portion, and an inner ring fitted onto the step portion and having a second inner ring raceway thereon, the shaft being quench hardened at least at the first inner ring raceway with the crimped portion kept as formed and without quench hardened, and the inner ring being fixed to the shaft by the crimped portion of the shaft.

Abstract: 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.

Abstract: A rolling bearing unit with rotating speed detector comprises a stationary outer ring member, a rotating inner ring assembly, a rolling elements between the outer ring member and inner ring assembly, a sensor mounted to the outer ring member and a tone wheel mounted to the inner ring assembly and having a cylindrical portion faced to the sensor, such that the portion is formed with an outward facing flange to which a jig can be applied.

Abstract: A seal device for the rolling bearing has an inner seal lip which never turns over when the inner seal lip with its tip end edge separated from the outer peripheral surface of the cylindrical portion of the slinger is fitted onto the cylindrical portion of the slinger, so that the inner seal lip is not resiliently deformed, or very little resiliently deformed while the tip end edge of the inner seal lip is fitted onto the cylindrical portion of the slinger.

Abstract: A rolling bearing unit for a vehicle wheel comprising a stationary member fixed to a suspension and having an outer ring raceway, a rotatable member provided to support the vehicle wheel and having an inner ring raceway and a housing which is to be an outer ring of a constant velocity joint, a plurality of rolling members between the outer ring raceway and the inner ring raceway, balls being in contact with the housing having a plurality of outer engagement grooves extending at right angles with respect to the circumferential direction, the opening on both of the circumferential sides of the outer engagement grooves provided with a chamfered portion having a radial size which is larger than the elastic displacement of the area of contact between the balls and the housing adjacent to each other when the surface pressure at the center of the contact portion of the housing with the balls reaches 4200 MPa.

Abstract: 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.

Abstract: A rolling bearing unit with a rotation speed sensor comprising a stationary member, a rotatable member having a second raceway, a plurality of rolling members rotatably provided between the first raceway and the second raceway, an encoder fixed to the rotatable member and to be concentric with the rotational axis thereof and having a detected portion the characteristics of which are adapted to alternately change, and a sensor fixed to the stationary member to detect changes in the magnetic characteristics of the encoder to produce signals as the rotatable member rotates, and the sensor having a detecting portion which is opposed to the detected portion of the encoder with a clearance therebetween at a circumferential location where the change in the clearance is minimized when subjected to a load from outside.

Abstract: A rolling bearing unit with a rotating speed sensor includes a stationary double row outer ring having a mount hole in an axially intermediate portion thereof, a rotatable inner ring assembly having a first inner ring having a first inner ring raceway and a second inner ring having a second inner ring raceway, and a plurality of rolling members provided between the first and second inner ring raceways and the outer ring raceways to provide a ball set bore diameter, respectively. An encoder has a detected portion with characteristics which change alternately and with a uniform interval in a circumferential direction, and is fixed concentric, at a portion on the inner ring assembly, axially between the first and second inner ring raceways. The detected portion has an outer peripheral surface portion with a diameter up to the ball set bore diameter.

Abstract: A rolling bearing unit with rotating speed sensor comprising a stationary outer ring member having an outer ring raceway on an inner peripheral face thereof, a rotatable inner ring member having an inner ring raceway on an outer peripheral face thereof, a plurality of rolling elements provided between the outer ring raceway and the inner ring raceway, an annular tone wheel secured to the end portion of the inner ring member and having a cylindrical peripheral portion formed with rotating cutouts circumferentially with a uniform space therebetween, a cover comprising a synthetic resin block and a metal portion and having a cylindrical engaging portion fixed to the open end portion of the outer ring member by engaging the engaging portion with the inner peripheral face of the outer ring member, an annular sensor embedded in the resin block having a peripheral face such that the peripheral face thereof opposes partly the peripheral portion of the tone wheel, and a guide formed on at least one of the tone wheel a

Abstract: In the angular contact ball bearing, the respective conditions of the inner race dimensions are designed most suitably to prevent the shoulder portion of the inner race from being opened outwardly, thereby being able to prevent a slipping phenomenon from occurring between the inner race and shaft.

Abstract: A rolling bearing unit with rotating speed sensor comprising a stationary outer ring member having an outer ring raceway, a rotatable inner ring member having an inner ring raceway, a plurality of rolling elements rotatably provided between the outer ring raceway and the inner ring raceway, a cylindrical magnetic tone wheel fixed to the inner ring member and, having a cylindrical fixing portion fitted onto the inner ring member, a cylindrical detecting portion provided concentric with the cylindrical fixing portion and formed with rotating cutouts, and a stepped portion provided between the cylindrical fixing portion and the cylindrical detecting portion, and a cover comprising a synthetic resin block and a metal portion to be securely mounted to the outer ring member, and an annular sensor embedded in the synthetic resin block so as to be opposed to the tone wheel, and the cylindrical fixing portion having an inner peripheral face on which a plurality of engagement portions are arranged in a single circle to

Abstract: A rolling-ball bearing unit with a rotating speed sensor comprising rotating and stationary rings, a tonewheel, a first seal ring provided to seal between the tonewheel and the section where rolling members are provided, and a second seal ring having a base end portion fixed to the peripheral portion of a cover for the sensor and a tip end portion provided in a sliding contact relationship with a member provided axially adjacent the bearing unit and rotating with the rotating ring, and a harness take-out portion provided in a relatively their portion of the cover.

Abstract: A rolling bearing unit with seal device comprises an outer ring member having an inner peripheral surface formed with outer ring raceways in double rows, an inner ring assembly having an outer peripheral surface formed with inner ring raceways in double rows opposed to the outer ring raceways and having an outward flange projected from the open end portion of the outer ring member, a plurality of rolling elements provided between the outer ring raceways and the inner ring raceways, respectively, and a seal ring for covering an annular space between the outer ring member and the inner ring assembly and comprising a reinforcing metal, a first side seal lip on the radially outer side having a tip edge in sliding contact relation with a side face of the outward flange, a second side seal lip on the radially inner side having a tip edge in sliding contact relation with a tip edge in sliding contact with a curved surface portion through which the side face is continued to the outer peripheral surface of the inner r

Abstract: A hub unit has a hub with a nut tightened at an axially inner end which is partly projected from the nut. A tone wheel is secured to the axially inner end of the hub. The tone wheel has an outer cylindrical portion provided around the nut and having magnetic properties changing alteratively in a circumferential direction with a uniform interval. An outer ring is provided, which has an axially inner open end. A cover covers the axially inner open end of the outer ring. The hub unit also has a sensor of a passive type supported by the cover and having a detecting portion facing to the outer periphery of the outer cylindrical portion of the tone wheel.

Abstract: A rolling bearing unit with rotating speed sensor comprising a stationary outer ring member having an outer ring raceway, a rotatable inner ring member having an inner ring raceway, a plurality of rolling elements rotatably provided between the outer ring raceway and the inner ring raceway, a cylindrical magnetic tone wheel fixed to the inner ring member and, having a cylindrical fixing portion fitted onto the inner ring member, a cylindrical detecting portion provided concentric with the cylindrical fixing portion and formed with rotating cutouts, and a stepped portion provided between the cylindrical fixing portion and the cylindrical detecting portion, and a cover comprising a synthetic resin block and a metal portion to be securely mounted to the outer ring member, and an annular sensor embedded in the synthetic resin block so as to be opposed to the tone wheel, and the cylindrical fixing portion having an inner peripheral face on which a plurality of engagement portions are arranged in a single circle to

Abstract: A rolling bearing unit with rotating speed sensor comprising a stationary outer ring member having an outer ring raceway on an inner peripheral face, thereof, a rotatable inner ring member having an inner ring raceway on an outer peripheral face thereof, a plurality of rolling elements provided between the outer ring raceway and the inner ring raceway, an annular tone wheel secured to the end portion of the inner ring member and having a cylindrical peripheral portion formed with rotating cutouts circumferentially with a uniform space therebetween, a cover comprising a synthetic resin block and a metal portion and having a cylindrical engaging portion fixed to the open end portion of the outer ring member by engaging the engaging portion with the inner peripheral face of the outer ring member, an annular sensor embedded in the resin block having a peripheral face such that the peripheral face thereof opposes partly the peripheral portion of the tone wheel, and a guide formed on at least one of the tone wheel

Abstract: A double-row, angular-type ball bearing for a wheel has a groove radius relationship such that the groove radius r6a of the outer-ring raceway 6a on the widthwise outer side with reference to the vehicle is larger than the groove radius r6b of the outer-ring raceway 6b on the widthwise inner side with reference to the vehicle (r6a>r6b), and has a shoulder section formed in the first outer-ring raceway 6a on the outer side and the second outer-ring raceway 6b on the inner side to have a sub-section 10 that curves in the opposite direction with reference to the main section 9 of the outer-ring raceways 6a, 6b.