The components that support the relatively rotating shaft are called bearings. Bearings should be relatively common in our daily lives. Under normal circumstances, the shaft rotates, and the housing rotates without the shaft rotating. Although it is better to develop a bearing supplier , there are still many problems, such as originality.
Low R & D and innovation capacity of the bearing industry. The industry's basic theoretical research is weak, the participation in the formulation of international standards is weak, there are fewer original technologies, and fewer patented products.At present, our design and manufacturing technology is basically imitated, and our product development capabilities are low. This is reflected in the fact that although the supporting rate for domestic mainframes has reached 80%, high-speed railway passenger cars, medium and high-end cars, computers, air conditioners, high-level rolling mills, etc. are important The main engine's supporting and maintenance bearings are imported.
And not only in terms of originality and manufacturing technology but also in terms of industry concentration. So bearing manufacturers still have a long way to go.