A vehicle wheel bearing apparatus has a pitch circle diameter of an outer side ball group that is larger than a pitch circle diameter of an inner side ball group. The process is based on preferably round metal sheets which are first drawn in a first draw-stretching step of the tool 2 into cups and then are draw-stretched in a second draw-stretch process, the further draw- and slide-down-stretch to form can bodies. The grooves have sharp edges, radiused ends, and a draft angle between about 2\xb0 and 12\xb0. Schemas and tables can be used to partition modeling platform data vertically and folders can be used to partition modeling platform data horizontally.