Bearing is important, key components in manufacturing industry of equipment, it directly determines the performance, quality and reliability of major equipment and hosting products, known as the" heart" elements of equipment manufacturing. After years development, China bearing industry has formed onsiderable Scale. The national bearing industry in 2010, the output value is about 1300 billion yuan, ranked third in the world. While though the development of our country's bearing industry scale is very large, the majority is concentrated in low-end situation; and in the high-end bearing manufacturing field, we have large distence with developed countries. China bearing industry association secretary-general Wang Quanqing also made clear state that China high-end bearing development speed can not keep up with the host machine development speed. So now, the high-end bearing development is the primary task in our country.