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 the 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 a portion of the available oversize to be removed from the axially outer annular surface of the radially inner ring, the value of the oversize to be removed being equal to a 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 to be removed,
• 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.