Flanged wheel hub unit and assembly method

A method of assembling a wheel hub unit for motor vehicles, comprising:

• providing a rotatable hub, and a bearing unit having:
• a radially outer ring,
• a radially inner ring, and
• a plurality of rolling bodies respectively positioned between the radially outer ring and the hub and between the radially outer ring and the radially inner ring,
• the method being suitable for ensuring a predetermined value of an axial preload (μ) of the bearing unit and comprising the following steps:
• assembling a radially inner ring in a semifinished configuration provided with an available oversize (ΔX), a predetermined amount of which is to be removed from an axially outer annular surface of the radially inner ring,
• measuring an axial clearance of the bearing unit present between a shoulder edge of the radially inner ring and an axially inner end of the rolling bodies,
• disassembling the radially inner ring from the bearing unit,
• calculating an oversize to be removed from the axially outer annular surface of the radially inner ring, the value of the removed oversize being equal to the sum of the value of the axial clearance and the predetermined value of the axial preload (μ).
• removing from the axially outer annular surface of the radially inner ring the oversize,
• assembling the radially inner ring in a finished configuration on the bearing unit, wherein the radially inner ring has a finished axial length which ensures the predetermined value of the axial preload (μ) of the bearing unit.