Do you know how to judge the quality of bearings? Follow the editor of 6900 Series Bearing in china to have a brief understanding of it!
1. Selection of types.
Different types of rolling bearings have different characteristics and are suitable for different use conditions of various machines. When selecting a bearing, the following factors are usually considered. Generally speaking: when bearing thrust load, choose thrust bearing and angular contact bearing. For high-speed applications, use ball bearing. When bearing large radial load, choose roller bearing.
2. The space and position occupied by the bearing.
When designing a machine tool, the size of the shaft center is usually determined first, and then the rolling bearing is selected according to the shaft diameter. Ball bearings generally use small shafts, and large shafts use roller bearings. However, when the bearing is limited in the diameter direction of the machine, needle roller bearings, extra light and ultra light series ball bearings or roller bearings can be selected; when the bearing is limited in the axial position of the machine, narrow series or Extra narrow range of ball or roller bearings.

3. The magnitude, direction and performance of the load carried by the bearing.
Load is a factor in bearing selection. Rolling bearings are used to withstand heavy loads, ball bearings are used to withstand lighter or medium loads, and bearings made of carburized steel or bainite quenched that can withstand shock and vibration loads. When subjected to purely radial loads, deep groove ball bearings, cylindrical roller bearings or needle roller bearings can be selected. When bearing a small pure axial load, a thrust ball bearing can be selected; in the case of a large pure axial load, a thrust roller bearing can be selected. When bearing combined radial and axial loads, angular contact ball bearings or tapered roller bearings are generally selected.
The above is what the editor of 6900 Series Bearing in china tells:A brief introduction to the relevant knowledge about the judgment method of bearing quality.