Abstract: This invention relates to method for fabricating a vehicle hub, bearing and brake disc assembly wherein the brake surface of the brake disc is oriented in a predetermined relationship relative to the outer race of the bearing assembly. The method comprises the steps of: (a) providing a vehicle hub including a hub flange; (b) providing a bearing assembly having an outer race; (c) installing the bearing assembly about the vehicle hub; (d) providing a separately formed brake disc having a brake surface; (e) securing the brake disc to the hub flange of the vehicle hub to produce a vehicle hub, bearing and brake disc assembly; (f) supporting the vehicle hub, bearing and brake disc assembly on a machining apparatus; and (g) using the machining apparatus to machine the brake surface of the brake disc of the vehicle hub, bearing and brake disc assembly whereby the brake surface is oriented in a predetermined relationship relative to the outer race of the bearing assembly.

Abstract: A method for fabricating a brake disc assembly comprising the steps of machining a radially extending gage surface (54) on the support flange (34) of an outer race (32) of a bearing assembly disposed around a hub (14) and inserting a fixture post (72) through a spring washer (68) and through the bore (22) in the hub (14). A clamp plate (74) is disposed in engagement with the base (26) of the brake disc with a washer/nut (78) over the clamp plate (74) to place the post (72) in tension to urge the spring washer (68) against the bearing assembly tomaintain the pre-load on the bearing assembly. The outer race (32) of the bearing assembly is clamped with the gage surface (54) drawn against a gage (84) to properly orient the outer race (32) about a fixed axis A. Thereafter, the clamp plate (74) is engaged by rotating jaws (90) which rotate about a floating axis B.