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。
0.0785 inches minimum and 0.0786 inches maximum bore diameter, 0.0896 inches minimum and 0.0906 inches maximum overall width, straight bore shape, ground surface finish, inner ring, roller, single lip style designator