According to the National Bureau of Statistics, 2011 China bearing Manufacturing Industry scale (annual sales income of more than 20 million yuan) enterprises a total of 1416 enterprises, the whole year to achieve 193.211 billion yuan of industrial output, year-on-year growth of 27.59%, sales revenue of 191.097 billion yuan, year-on-year growth of 30.3% , with a total profit of $12.523 billion, a growth of 26.54% over the previous year. It is expected that by 2015, China's bearing output is expected to exceed 28 billion sets, the main business revenue is expected to reach 210 billion yuan, the world's largest bearing production and sales base.
At present, China's bearing industry is facing three major problems: low production concentration, low development and innovation ability, low manufacturing level.
First, the industry's low concentration of production. The world's 8 largest multinational companies account for about $30 billion in sales worldwide, $number. Germany's two largest companies accounted for 90% of the country's total, 5 of Japan accounted for 90% of the country's total, the United States 1 of the national total of 56%. And China's tile axis, such as 10 largest bearing enterprises, sales accounted for only 24.7% of the entire industry, the first 30 of the production concentration is only 37.4%.
Second, research and innovation capabilities are low. The whole industry basic theory research weak, participates in the international standard formulation strength weak, less original technology, less patented products.
At present, our design and manufacturing technology is basically imitation, product development capability is low, performance in: Although the domestic host matching rate reached 80%, but the high-speed railway passenger cars, high-end cars, computers, air conditioners, high level rolling mill and other important host supporting and maintenance bearings, basically rely on imports.
Third, low manufacturing technology. China's bearing industry manufacturing process and process equipment technology development slow, car processing NC rate low, grinding automation level is low, the country has only more than 200 automatic production lines. For the bearing life and reliability of the advanced heat treatment technology and equipment, such as control atmosphere protection heating, double refinement, bainite quenching and other low coverage, many technical problems have failed to achieve breakthroughs. The research and development of new steel grades of bearing steels, the improvement of steel quality, lubrication, cooling, cleaning and abrasive tools and other related technologies can not meet the requirements of bearing product level and quality improvement. As a result, the process capability index is low, the consistency is poor, the product processing dimension is large, the internal quality of the product is unstable and the bearing's precision, performance, life and reliability are affected.