A frame or inclosure which spaces and retains the rolling elements of a bearing, roller (as modified).
1.5840 inches minimum and 1.5870 inches maximum bore diameter, 0.4500 inches minimum and 0.4600 inches maximum overall width, copper alloy 642 overall material, 1.7910 inches minimum and 1.8010 inches maximum outside diameter, qq-c-465,alloy 642 fed spec 1st material response or qq-c-390,alloy g6 fed spec 2nd material response overall material document and classification