LIGHTWEIGHT HUB BEARING ASSEMBLY AND METHODS OF ASSEMBLING IT

摘要

A hub bearing assembly includes a hub made of lightweight metallic material and forming a cylindrical portion, on which a tubular inner ring providing a raceway is mounted; a second inner ring is fixed on the first tubular inner ring and provides a second raceway; a cylindrical interstice is formed between the cylindrical portion of the hub and the tubular inner ring and contains a structural adhesive which integrally joins the hub to the first tubular inner ring.

主权项

1. A hub bearing assembly, comprising:
a hub forming, in a single piece of a first metallic material:
a cylindrical portion extending in an axial direction and having a cylindrical outer surface, anda flange extending in a radially outward direction from an axially outer end of the cylindrical portion; a bearing unit, comprising:
an outer ring providing two outer raceways for accommodating a first, axially outer row and a second, axially inner row of rolling elements,a first tubular inner ring made of a second metallic material and providing a first raceway for the first row of rolling elements and an inner, axially extending cylindrical cavity, anda second inner ring providing a second raceway for the second row of rolling elements, the second inner ring being fixed on the first tubular inner ring; a cylindrical interstice, formed between the outer cylindrical surface of the hub and the axial cylindrical cavity of the first tubular inner ring, and a structural adhesive material contained in the interstice and integrally joined to the outer cylindrical surface of the hub and the axial cylindrical cavity of the first tubular inner ring.