| 摘要 |
An automotive hub assembly (A), which carries a brake disk (B), has a hub (2) provided with a spindle (12) which rotates in a housing (4) on a double row antifriction bearing (6) having its raceways (28, 44) oriented obliquely to the axis (X) of rotation so that the bearing (6) accommodates both radial and axial loads. The bearing is set to a condition of preload so no free motion exists in it. The hub also has a flange (10) at one end of its spindle, and the flange is machined on its face that is presented away from the housing to provide a machined mounting surface (22) against which the brake disk is installed. The machining occurs after the hub assembly is assembled. To this end, the housing of the hub assembly is held fast while the hub is rotated on the bearing. With the hub rotating, a cutting tool (70) is moved across the face of the flange, and it produces the machined mounting surface which is perpendicular to the axis of the bearing. The machined mounting surface has essentially no runout, so that the brake disk acquires no runout from the hub assembly. |
