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.
0.8770 inches minimum and 0.8870 inches maximum bore diameter, steel overall material, 1.4070 inches minimum and 1.4270 inches maximum outside diameter, flat race surface style designator, 0.1230 inches minimum and 0.1260 inches maximum overall width