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Recently, according to the relevant authoritative media in China, great breakthroughs have been made in the theory, material, manufacturing and technology of high performance bearings for aeroengine in recent years, and some aspects have even reached the international leading level. So are these reports true? Why are high-end civil bearings in China still the world of foreign famous brands? This paper makes an objective background analysis on the latest development of bearing industry in China, especially the high performance bearing technology of aerospace engine, based on the relevant news reports of the media and public information at home and abroad. As we all know, the main bearing of military and Civil Aeroengine is one of the key components of aeroengine. Its performance and service life directly determine the reliability of the aeroengine. However, due to various historical reasons, China's aviation bearing technology started late, and until the end of the last century did not take bearing gear steel as the focus of research and development, compared with the world's bearing powers, the gap is very obvious.
For example, a turbojet engine developed in 1985 for J-8II fighter plane can not guarantee the first refurbishment life of the engine even 200 hours due to the short life of the main bearing. This is the result of great efforts made by the aviation bearing researchers in China. The main bearing life of the turbofan engine used in the third generation fighter aircraft such as F15 and F16, which were in service in western countries at that time, has basically achieved the same life as that of the engine, and the service life can reach thousands of hours. At that time, the foreign control of aeroengine bearing products was not particularly strict (such as SKF in Sweden, Scheffler in Germany and other famous manufacturers of aeroengine bearings were relatively friendly to our country). The huge differences in their performance caused the imported bearings to be the main part in the field of domestic high-end aeroengine bearings, but their military bearing products still implemented strict technical seal to our country. Locks and embargoes.
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