Bearings are key components of aero engines

The aero-engine main shaft rolling bearing is a key component of the engine. It needs to be subjected to various stresses and pressures under high temperature and high pressure conditions to perform a high-speed working mode of 3000 rpm. The main bearing life directly affects the overall life of the aeroengine. And this is precisely because our bearing working life is far less than that of the western countries, resulting in aero engine life is far less than the other side, and this is one of the reasons why Russia's aero engine life is generally not as good as Europe and the United States.

At present, China's aviation engine bearing field has a gap of nearly 30 years from Europe and the United States. This has also led to the high-end manufacturing sector in China, and is also very dependent on imported bearings. For example, high-speed rail, high-speed rail is a business card in China, but the previous bearing is almost 100% imported, mainly imported from Sweden and Japan. After years of unremitting efforts, the use of domestic bearings has begun to be used one after another, but the bearings of more than 250 kilometers are still dependent on imports.

Bearings can be said to be an important standard in the manufacturing sector. Bearing levels can determine the level of manufacturing. There is no shortcut in this area. Small bearing development involves a series of technical problems such as materials, grease and lubrication, manufacturing, design, bearing manufacturing equipment, testing and testing, as well as contact mechanics, lubrication theory, tribology, fatigue and damage, heat treatment and material organization. Research and interdisciplinary.