滾珠軸承或滾柱軸承的內部組件,為減摩軸承的滾動元件提供接觸面。
0.7550 inches minimum and 0.7600 inches maximum overall width, 0.7495 inches minimum and 0.7500 inches maximum overall outside diameter, steel overall material, 0.4995 inches minimum and 0.5000 inches maximum bore diameter, straight bore shape