The use of bearings plays a vital role in modern industry. Whether in automobiles, machinery manufacturing or power equipment, bearings can effectively reduce friction and improve the operating efficiency of equipment. There are many types of bearings, including rolling bearings, sliding bearings, etc., and each bearing has its own unique application scenarios and performance characteristics. Take rolling bearings as an example. It uses rolling elements to reduce friction between contact surfaces and is suitable for high-speed machinery. Sliding bearings reduce friction through lubricating oil films and are usually used in equipment that bears large loads. In order to ensure the long-term and stable operation of bearings, regular maintenance and lubrication are indispensable, which can not only extend the service life of bearings, but also avoid equipment downtime and economic losses caused by failures. In addition, with the development of science and technology, the emergence of intelligent bearings has brought new opportunities for the use of traditional bearings. By monitoring the working status of bearings through sensors, real-time data analysis and fault warning can be realized, which improves the intelligence level of equipment. Therefore, in-depth understanding and reasonable application of bearings are not only the key to improving production efficiency, but also an important factor in promoting industrial development.