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