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.
0.5000 inches nominal bore diameter, 0.0300 inches minimum and 0.0320 inches maximum overall width, steel comp e52100 overall material, 0.9370 inches nominal outside diameter, 66,aisi/sae e52100 fed std single material response overall material document and classification