Wheel bearing assembly with integrated seal

A cage for containing at least one row of rolling bodies in a wheel hub assembly, comprising:

• a seal integrated in a cage, the seal provided with at least two radial contact lips, with at least one first radial lip configured to, when assembled in a wheel hub assembly, contact a radially inner ring and with at least one second radial lip configured to, when assembled in a wheel hub assembly, contact with a radially outer ring,
• wherein the cage has a support portion on which the at least two radial lips are co-moulded and wherein the cage is configured such that, when assembled in a wheel hub bearing, a centre of gravity of the support portion is positioned approximately on a same nominal pitch diameter of a rolling body, wherein the nominal pitch diameter is the diameter in which a center of the rolling body of a row of rolling bodies is positioned with respect to an axis (X) of symmetry of the wheel hub bearing,
• wherein a ratio between a thickness (A) of the support portion and a thickness (B) of a radial lip of the at least two radial lips ranges between 50% and 80%, and
• wherein the support portion has a plurality of openings disposed in a discontinuous manner in a circumferential direction, a plurality of crimping holes and a plurality of grooves made to improve adhesion of an elastomeric material of the at least two radial contact lips on the cage.

A cage for containing at least one row of rolling bodies in a wheel hub assembly, comprising:

• a seal integrated in a cage, the seal provided with at least two radial contact lips, with at least one first radial lip configured to, when assembled in a wheel hub assembly, contact a radially inner ring and with at least one second radial lip configured to, when assembled in a wheel hub assembly, contact with a radially outer ring, wherein the cage has a support portion on which the at least two radial lips are co-moulded and wherein the cage is configured such that, when assembled in a wheel hub bearing, a centre of gravity of the support portion is positioned approximately on a same nominal pitch diameter of a rolling body, wherein the nominal pitch diameter is the diameter in which a center of the rolling body of a row of rolling bodies is positioned with respect to an axis (X) of symmetry of the wheel hub bearing, wherein a ratio between a thickness (A) of the support portion and a thickness (B) of a radial lip of the at least two radial lips ranges between 50% and 80%, wherein the support portion has a plurality of openings disposed in a discontinuous manner in a circumferential direction, a plurality of crimping holes and a plurality of grooves made to improve adhesion of an elastomeric material of the at least two radial contact lips on the cage, wherein the at least two radial lips are made of a vulcanized thermoplastic polymeric material, wherein the at least two radial lips have substantially the same length in a radial direction comprised in a range between 1 mm and 5 mm, wherein the at least two radial lips have an interference with the corresponding surfaces of the radially inner ring and radially outer ring varying between 0.3 mm and 0.5 mm, wherein the at least two radial lips have a thickness ranging between 0.1 mm and 0.6 mm, and wherein the thickness (A) of the support portion ranges between 3 mm and 6 mm.