The strength of aerospace bearing technology is directly related to the performance of aeroengine. In recent years, China's bearing industry has achieved a high level of development, and its output and sales have ranked third in the world, but even so, there is still a big gap between China and the world's powerful countries in the field of bearing core technology.

The reliability of aerospace bearings produced abroad can reach 98%, while in contrast, the reliability of aerospace bearings in China is still hovering around 96%. The lack of technical strength in this field has become one of the important factors restricting the domestic aeronautical performance. Therefore, it is urgent for our country to break through the core technology of aerospace bearing.

With the strong support of domestic policy, HRB Bearing Company and HRB University of Technology cooperated in the research and application of Si3N4 silicon nitride ceramics. It is reported that silicon carbide ceramic ball can withstand high temperature environment within 800 degrees Celsius, which is the best choice in the field of high performance bearing technology.

Nowadays, the self-developed hybrid ceramic bearings in China can directly pass the verification requirements of continuous operation for five hours, which gives China the hope of breaking the monopoly of foreign countries on high-end bearings in China. China Aviation Industry has also announced the acquisition of Harbin Bearing Company, investing a large amount of funds in order to enhance and expand the domestic high-performance aerospace bearing industry. Therefore, I believe that before long, hybrid ceramic bearings will become the main force for China to build avant-garde equipment and aerospace weapons. At that time, China will become the world's fifth largest volume of aerospace ceramic bearings after the United States, Japan and Sweden.