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。
1.2942 inches minimum and 1.2992 inches maximum overall width, steel overall material, 2.5577 inches minimum and 2.5583 inches maximum bore diameter, straight bore shape, 3.2922 inches minimum and 3.2929 inches maximum smallest outside diameter