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.
steel comp 5140 overall material, 3.2200 inches minimum and 3.2400 inches maximum outside diameter, 2.5020 inches minimum and 2.5120 inches maximum bore diameter, flat race surface style designator, 0.0300 inches minimum and 0.0320 inches maximum overall width