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 alloy 954,type 2 or 3 fed spec 2nd material response overall material document and classification, 1.5640 inches minimum and 1.5670 inches maximum bore diameter, 1.8190 inches minimum and 1.8220 inches maximum outside diameter, copper alloy 642 overall material, 0.4840 inches minimum and 0.4940 inches maximum overall width