Patent ID: 9415633
Filing Date: 2016-08-16
CPC Classification: B21D,B21K,B23P,B60B,F16B,F16C,F16D,Y10T

Claim Text:
1. A wheel hub bearing unit comprising: a first component comprising an inner ring having opposing first and second axial ends and comprising a first inner raceway defined on an outer surface thereof for receiving a first row of rolling elements, and a first joining surface defined on an inner surface thereof; a second component comprising a flanged inner ring having an axially-extending nose part disposed at a first axial end thereof and defining a second joining surface, the flanged inner ring comprising a second inner raceway defined on an outer surface thereof for receiving a second row of rolling elements, and an annular shoulder disposed between the nose part and the second inner raceway; the first component being mounted on the nose part such that the second axial end abuts the shoulder and the first joining surface is arranged coaxially and spaced in a juxtaposition around the second joining surface, thereby defining an annular groove between the first and second joining surfaces, wherein: the first and second joining surfaces comprise radially opposite cylindrical portions at a first entrance side of the groove such that the groove comprises a cylindrical section, and the second joining surface comprises a concave portion and the first joining surface comprises a convex portion, radially opposite from the concave portion, each at a second side of the groove, such that the groove comprises an arcuate section; and an insert ring that is pressed into the groove via the cylindrical section at the entrance side of the groove and deformed so as to adopt the shape of the arcuate section, and wherein the insert ring has a volume that is at least equal to a volume of the cylindrical and arcuate sections of the groove.