NTN is one of the world's precision machinery manufacturers, the company was founded in 1918 in Japan, headquartered in Osaka City, the west, in Japan, there are 11 production companies, 25 business and 3 research institutes; in foreign countries have 20 wholly-owned production plants, 48 research institutes and 2 business. NTN production, sales, technology and various departments to develop and deepen their own professional field, NTN bearings, widely used in the production of precision machinery for all fields. How to reduce friction coefficient and improve energy efficiency? This past is purely wishful thinking, has begun to use in orbit satellite, aviation, railway and automotive, paper equipment, office equipment and food machinery and other industrial sectors! NTN bearings commonly used classification: NTN miniature ball bearings imports, NTN deep groove ball bearings imports, NTN centripetal thrust ball bearings imports, NTN automatic aligning ball bearings, NTN cylindrical rol.