How to determine the model of a bearing based on its inner and outer diameters
It is impossible to determine its model solely based on its inner and outer diameters. We also need to follow the thickness, form, structure, and so on
Firstly, based on its form, determine what type of bearing it is, and different types have different numbers. If the commonly used deep groove ball bearings are 6, there are also many types of angular contact ball bearings, cylindrical roller bearings, tapered roller bearings, and so on.
The outer diameter and thickness can determine whether it is a lightweight 1, medium 2, or heavy-duty 3 bearing.
Dividing the inner diameter by 5 can determine its last two digits. For example, if the inner diameter is 30, then the last two digits are 06.
If it's common and commonly used, it's okay, but special ones require more data.