A frame or inclosure which spaces and retains the rolling elements of a bearing, roller (as modified).
qq-c-390,ty 2 fed spec single material response overall material document and classification, 3.3810 inches minimum and 3.4010 inches maximum outside diameter, 3.1880 inches minimum and 3.1910 inches maximum bore diameter, 0.5890 inches minimum and 0.5990 inches maximum overall width, copper alloy 952 overall material