Nsk Corporation

Yoshihisa Ohnuki

Hiroya Miyazaki

Hiroyuki Sawai

Takafumi Kuwano

Hideo Ouchi

Junshi Sakamoto

Masao Yamamoto

Hayato Ohmi

Hiroaki Sasa

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.

Rolling bearing unit for supporting vehicle wheel

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 project radially inwards from the inner peripheral face, and to be abutted to the end face of the inner ring member, so that the tone wheel is positioned with reference to the inner ring member.

Rolling bearing unit with rotating speed sensor

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 ring assembly, and a radial seal lip having a tip edge in sliding contact relation with the outer peripheral surface of the inner ring assembly, such that the thickness of the side seal lip on the radially inner side is smaller than the thickness of the side seal lip on the radially outer side.

Rolling bearing unit with seal device

Growing community of inventors

Fujisawa, Japan

Yoshihisa Ohnuki