A rigid item usually circular in shape, designed to accommodate a bearing. It positions the bearing but does not encase it or restrain its motion.
0.6570 inches minimum and 0.6770 inches maximum outside diameter, 0.0920 inches minimum and 0.0950 inches maximum overall width, 0.2520 inches minimum and 0.2620 inches maximum bore diameter, steel overall material, flat race surface style designator