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.
2.4700 inches minimum and 2.4900 inches maximum outside diameter, 0.1230 inches minimum and 0.1260 inches maximum overall width, steel overall material, 1.7520 inches minimum and 1.7620 inches maximum bore diameter, flat race surface style designator