Method for manufacturing a wheel bearing apparatus

A method for manufacturing a wheel bearing apparatus comprising:

• providing an outer member integrally formed, on its outer circumference, with a body mounting flange to be mounted on a vehicle body, the outer member inner circumference including double row outer raceway surfaces;
• providing an inner member including a wheel hub and an inner ring, the wheel hub being integrally formed, on its one end, with a wheel mounting flange and the wheel hub outer circumference including an inner raceway surface corresponding to one of the double row outer raceway surfaces, a cylindrical portion axially extending from the inner raceway surface through a shoulder;
• measuring a distance Ho, Hi and Hh;
• Ho is measured on the outer member from a first touch diameter to a second touch diameter;
• Hi is measured from a third touch diameter, of the inner ring to a smaller end face of the inner ring;
• Hh is measured from a fourth touch diameter of the wheel hub to a shoulder of the wheel hub;
• comparing a difference of ΔH=(Hi+Hh−Ho) with a reference value of a model article;
• selecting rolling elements each having an optimum diameter to correct the difference ΔH between the measured values and the reference values;
• inserting the rolling elements between the outer member and the inner member;
• and
• press fitting the inner ring onto the cylindrical portion of the wheel hub via a predetermined interference(δ).