The founder, Mr. Jiro Nishizono began research and manufacture of ball bearings at Nishizono Ironworks in 1918. In 1923, Nishizono Ironworks and Tomoe Trading Co. (Nishi-ku, Osaka) began joint manufacture and sale of bearings under the brand name of NTN. Headquartered in Osaka Japan, now, NTN is a leading manufacturer of precision mechanical parts and components. NTN is a preferred product by a number of world-class industrial customers for their products, ranging from Automobile, railways, general machinery, jet aircraft, and medical instrument. The product offering is ranging from compositive material bearings to green energy bearings. For over 100 years, NTN is considered one of the top bearing manufacturers in Japan.