用於隔開並保持軸承、滾子(經修改)的滾動元件的框架或外殼。
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, 1.5350 inches minimum and 1.5450 inches maximum outside diameter, 0.4010 inches minimum and 0.4110 inches maximum overall width, copper alloy 642 overall material, 1.3350 inches minimum and 1.3380 inches maximum bore diameter