Bearing industry started very early in China. After half a century of development, it has formed a relatively systematic and integrated manufacturing and technical system. China has become the fourth largest country in the world bearing production after Japan, the United States and Germany. The Chinese bearing industry has made remarkable achievements. However, when compared to the countries which have rather advanced bearing industries, China's bearing industry still lags behind. The gap between China and many other countries can be illustrated as followings:
Firstly, in the aspect of the variety, at present, the variety of world bearing products is about 150 000. But China has only produced twenty thousand varieties, and most of them are general products.
Secondly, the gap exists in the production capacity. There are more than 2,000 bearing manufacturers in China which is five or six times of the total number of some countries. However, the country's annual total output is just as similar as the Timken Company (about 21 billion Yuan) in the United States. Compared to the annual output value (about 40 billion Yuan) of SKF company in Sweden, China's total output is just half of it.
Thirdly, the gap exists in the dimensional tolerance and precision of rotation. Although the level of China's bearing products is close to that of famous products in foreign countries, there is still a large gap in the measure of dispersion. Besides, foreign countries have already begun the research and application of rotation precision, but China has not done anything in this area at all.
Fourthly, the gap exists in the high-speed performance. The DmN of some famous bearing brands in foreign companies is about 4 × 106mm? r / min, whereas it is just about 2 × 106mm? r / min in China.
Fifthly, the gap exists in the service life and reliability. Taking the deep groove ball bearings as an example, the service life of famous bearing products from foreign countries is about 8 times (up to 30 times) of the calculating life expectancy, and the reliability is about 98% or more. However, the service life of Chinese bearings is only about 3 to 5 times of the calculating life expectancy, and the reliability is just about 96%.
All in all, Chinese bearing industry still lags far behind when compared to foreign products. Meanwhile, the technology of bearing industry in China can not compare with that in foreign countries. As the basic mechanical industry, the bearing industry plays a rather important part. The level of its technology somewhat stands for the country's level of industrial technology development. Therefore, it is rather urgent to develop the technology of the bearing industry so as to improve the development of the whole industry.
Searching for Sweden SKF, German FAG, Japanese NSK, NTN, KOYO, IKO, THK, ASAHI, American TIMKEN bearings Wholesaler and Supplier in China? Shandong BCB Bearing Co., Ltd is located in the beautiful Jinan, Shandong. The company sells imported bearings from Sweden SKF bearings, German FAG bearings, Japanese NSK, NTN, KOYO, IKO, THK, ASAHI bearings, American TIMKENand other internationally renowned brands. Our company's current bearing sales are used in various industries such as metallurgy, automotive, electric, petrochemical, railway, steel, mining, etc., customers all over the world.