In this video, we will continue to learn about the dimension series code in the basic code. The dimension series code is represented by numbers and is composed of the width (height) series code and the diameter series code of the bearing. The width series codes of radial bearings are divided into 8, 0, 1, 2, 3, 4, 5, and 6, and the width dimensions increase in this order; The diameter series codes are divided into: 7, 8, 9, 0, 1, 2, 3, 4, and the outside diameter of the bearing increases in this order. The width series code and diameter series code can be combined in pairs to form the dimension series code. Please refer to the table for details.

The thrust bearing is composed of height series codes 7, 9, 1, and 2, and diameter series codes 0, 1, 2, 3, 4, and 5, which are combined in pairs to form the dimension series code of the thrust bearing. The common dimension series codes are summarized in the figure. It should be noted that the dimension code represents the proportional relationship between the outside diameter and bore diameter, rather than specific dimensions.

By combining the type codes introduced in the last video with the dimension series codes in this video, bearing series code can be formed, such as the 618 series for deep groove ball bearings and the N2 series for cylindrical roller bearings. The bearing series code generally omits type code 0 and width series code 0, and in rare cases omits type code 1 and width series codes 1 and 2.

Welcome everyone to leave a comment in the comment section to discuss common bearing series codes.