According to the National Bureau of Statistics, in 2011 […]
According to the National Bureau of Statistics, in 2011 China bearing manufacturing industry size (annual sales income of 2,000 yuan or more) companies a total of 1416 companies, the annual industrial output value of 193.211 billion yuan, an increase of 27.59%; sales revenue of 191.097 billion yuan, an increase of 30.30%; total profit of 12.523 billion yuan, an increase of 26.54% over the previous year. By 2015, China's bearing production is expected to more than 28 billion units, main business revenue is expected to reach 210 billion yuan, becoming the world's largest bearing production and sales base.
China's bearing industry is currently faced with three major outstanding issues: namely, the production of low industry concentration, low R & D and innovation capacity, low level of manufacturing technology.
First, industry production concentration is low. About $ 30 billion in sales around the world bearing the world's eight major multinationals accounted for 75% to 80%. Germany the two companies account for 90% of the national total, accounting for 90% of Japan's five national total, accounting for 56% of the national total an American. In China, such as 10 Wazhou largest bearing company sales accounted for only 24.7% of the entire industry, the top 30 of the concentration of production is only 37.4%.
Second, low R & D and innovation. Weak industry-wide basic theoretical research, participation in international standards development is weak, less original technology, few patented products.
At present, our design and manufacturing technology is basically imitate, low product development capabilities, performance: While matching rate of the host country to reach 80%, but high-speed railway passenger cars, luxury cars, computers, air conditioners, and other important high-level mill bearing host support and maintenance, basically rely on imports.
Third, the low level of manufacturing technology. Bearing industrial manufacturing processes and process equipment and technology development of China's slow, low rate car CNC machining, grinding low level of automation, only 200 number of automated production lines in the country. Bearing life and reliability is critical heat treatment of advanced technology and equipment, such as controlled atmosphere heat protection, low double refining, bainite quenching coverage, many technical problems research failed to achieve a breakthrough. The new steel bearing steel research and development, improve the quality of steel, lubrication, cooling, cleaning and abrasives and other related technology research and development, still can not meet the level of bearing products and quality improvement requirements. Resulting in low process capability index, consistency is poor, product processing size dispersion, the inherent instability and affect the accuracy of product quality, performance, service life and reliability of the bearing.