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。
0.7620 inches minimum and 0.7720 inches maximum overall width, copper alloy overall material, 2.8720 inches minimum and 2.8820 inches maximum outside diameter, 2.5680 inches minimum and 2.5710 inches maximum bore diameter, cast retainer fabrication method