Abstract: A wheel hub bearing unit includes a hub rotatable about an axis and having a flange connectable with a wheel, an inner ball raceway and an inner roller raceway. An outer ring is connectable with the vehicle and disposed about the hub and has an outer ball raceway and an outer roller raceway. A plurality of balls roll upon the inner and outer ball raceways and a plurality of tapered rollers roll upon the inner and outer roller raceways. A contact angle between the balls and the ball raceways has a value between ten degrees and forty degrees. Each line extending through ball inner and outer contact points intersects with a line extending through a roller midpoint circle at a vertex, the vertex being spaced from a midpoint of a spacing line segment between ball and roller pitch circles by an axial distance of no greater than 7.5 millimeters.

Abstract: A wheel hub bearing unit includes a hub rotatable about an axis and having a flange connectable with a wheel, an inner ball raceway and an inner roller raceway. An outer ring is connectable with the vehicle and disposed about the hub and has an outer ball raceway and an outer roller raceway. A plurality of balls roll upon the inner and outer ball raceways and a plurality of tapered rollers roll upon the inner and outer roller raceways. A difference between a ball pitch circle radius and a roller midpoint circle radius is no greater than five millimeters. A vertex at the intersection of each line extending through the midpoint circle and a line extending through a midpoint of a spacing line segment is spaced from the axis by a radial distance, a ratio of the vertex radial distance to the midpoint circle radius is between 1.5 and 3.0.

Abstract: A hub bearing unit includes an inner ring having inboard and outboard axial ends and a bearing inner race on an outer surface. An outer ring is disposed about the inner ring and has inboard and outboard axial ends and a bearing outer race on an inner surface. One ring is coupled with a wheel and is rotatable about an axis and the other ring is fixedly coupled with a vehicle. An annular displacement limiter extends radially outwardly from the inner ring and has a radial stop surface spaced axially from the inboard end of the outer ring. The stop surface engages with the outer ring end when one ring displaces axially relative to the other ring. Preferably, the limiter is integrally formed with an annular insert providing a bearing inner race, but may be separately formed and disposed about the insert or the inner ring outer surface.

Abstract: A hub bearing unit includes an inner ring having inboard and outboard axial ends and a bearing inner race on an outer surface. An outer ring is disposed about the inner ring and has inboard and outboard axial ends and a bearing outer race on an inner surface. One ring is coupled with a wheel and is rotatable about an axis and the other ring is fixedly coupled with a vehicle. An annular displacement limiter extends radially outwardly from the inner ring and has a radial stop surface spaced axially from the inboard end of the outer ring. The stop surface engages with the outer ring end when one ring displaces axially relative to the other ring. Preferably, the limiter is integrally formed with an annular insert providing a bearing inner race, but may be separately formed and disposed about the insert or the inner ring outer surface.