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.
qq-s-763,class 440c fed spec single material response overall material document and classification, 1.5300 inches minimum and 1.5310 inches maximum outside diameter, 0.1230 inches minimum and 0.1260 inches maximum overall width, 1.0300 inches nominal bore diameter, steel comp 440c overall material