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。
copper alloy overall material, cast retainer fabrication method, 2.4820 inches minimum and 2.4920 inches maximum outside diameter, 2.1740 inches minimum and 2.1770 inches maximum bore diameter, 0.6840 inches minimum and 0.6940 inches maximum overall width