The market demand for performance of various mechanical devices, instruments, etc. using rolling bearings is becoming increasingly strict, and the conditions and performance required for bearings are also becoming 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 perspectives. When selecting bearings, the bearing structure is generally determined by considering the arrangement, installation, and ease of disassembly of the bearings as a shaft system, the space and size allowed by the bearings, and the marketability of the bearings. Secondly, while comparing and studying the design life of various machinery using bearings and the different durability limits of bearings, the bearing size is determined. When choosing bearings, it is often biased towards only considering the fatigue life of the bearings, and the grease life, wear, noise, and other factors that occur due to grease aging also need to be fully studied. Furthermore, according to different applications, it is necessary to choose bearings with specially designed requirements for accuracy, clearance, cage structure, lubricating grease, and so on. However, there is no specific order or rule for selecting bearings. The priority should be given to the conditions, performance, and most relevant issues required for the bearings, which is particularly practical.
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