Factors to consider when selecting bearings

Bearings generally consist of inner rings, outer rings, rolling elements and cages. For sealed bearings, add lubricant and seals (or shields). This is what a bearing is all about.

According to the working conditions of the bearings, different types of bearings are selected to better play the function of the bearings and prolong the service life of the bearings. We choose bearings to consider the following factors:

1. Radial load; 2. Axial load;  3. Speed requirements;  4. Radial runout; 5. Axial runout;  6. Working temperature;  7. Noise requirement;  8. Lubrication condition

The market requirements for various mechanical devices and instruments using rolling bearings are becoming increasingly strict, and the conditions and performance required for bearings are also becoming more and more diverse. In order to select the most suitable bearing from a large number of structures and sizes, it is necessary to study from various angles. When selecting a bearing, generally, the bearing arrangement, the ease of installation and disassembly, the space allowed by the bearing, the size of the bearing, and the marketability of the bearing are generally considered to roughly determine the bearing structure. Next, determine the bearing size while comparing and studying the design life of various machines using bearings and the various durability limits of bearings. When selecting bearings, it is often biased to consider only the fatigue life of the bearing, and the grease life, wear, and noise caused by the aging of the grease also need to be fully studied. Furthermore, according to different uses, it is necessary to select bearings specially designed for the requirements of precision, clearance, cage structure, grease, etc. However, there is no certain order and rules for selecting bearings. The priority should be the conditions, performance, and most relevant matters required for the bearings, especially practical.