Ntn Corporation

Chinami Kitanaka

Kazunari Yamamoto

Syougo Suzuki

Tomoko Baba

Shunsuke Morita

A bearing device () for a vehicle wheel provided with: an outer member (); and an inner member comprising a hub wheel (), and at least one inner wheel () press-fitted into the small-diameter ridge (A) of the hub wheel (); wherein a belt-shaped part (F) that radially protrudes by a protrusion amount (P) is formed over a prescribed width (W) in the outer peripheral surface of the outer member () so that at least part of the belt-shaped part (F) radially overlaps the outside rolling surface (D) which is on the vehicle-wheel-attachment-flange-facing side of the outer member (). The present invention addresses the problem of providing a bearing device for a vehicle wheel in which the amount of deformation in an opening of an outer member can be reduced and decreases in rolling fatigue service life can be prevented while keeping overall weight increase to a minimum.

Bearing device for vehicle wheel

A bearing device for a vehicle wheel includes an outer member which is a plastic work piece in which an open hole in an outer-side end part is pushed out from inner sides, and an outer periphery of the outer member has a bulged part that is enlarged radially outward.

Growing community of inventors

Iwata, Japan

Chinami Kitanaka