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Technical level of bearing manufacturing in China

China's bearing manufacturing technology and equipment technology development is slow, CNC machining rate and grinding automation level is low, there are only more than 200 automatic production lines in China. In most China bearing manufacturers, especially in the state-owned enterprises, traditional equipment is still the main production force.


The advanced heat treatment technology and equipment, which are very important to the bearing life and reliability, have not made breakthroughs in many technical problems.


The research and development of new bearing steel grades, the improvement of bearing steel quality, the research and development of lubrication, cooling, cleaning and abrasive grinding tools and other related technologies can not meet the requirements of China bearing product level and quality improvement.


As a result, the process capability index is low, the consistency is poor, the product processing size dispersion is large, and the internal quality of the bearing product is unstable, which affects the accuracy, performance, life and reliability of the bearing.


In recent years, the quality of China's bearings has been improving and industrialization has been gradually formed. At present, China's bearings account for about 10% of the world's bearing market, and the sales volume occupies the top several in the world.


However, compared with the world bearing industry power, there is still a certain gap between China and the world. The main performance is that the proportion of bearing products with high technology, high precision and high added value is low, and the stability of products needs to be further improved and improved.

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