Koyo Machine Industries Co., Ltd. ("Koyo") was established in August, 1961, in Japan as a wholly owned subsidiary of JTEKT Group, which is publicly traded on the Tokyo Stock Exchange. Koyo Machinery USA, Inc. is 100% owned by Koyo Machine Industries Co., Ltd. Koyo produces various grinding machines, assemblies, spindles, precision ball screws, handle and universal joints, and drive shafts for industry. Additionally, Koyo performs applied engineering research and production engineering research. Koyo Machine Industries Co., Ltd. employs over 1,300 persons and achieved annual sales in 2010 of over US$400 million.
Koyo Machinery U.S.A., Inc. ("Koyo Machinery") is a Michigan corporation that was incorporated on December 4, 1991. It is a wholly-owned subsidiary of Koyo Machine Industries Co., Ltd. Koyo Machinery provides manufacturing products including grinding machines to its customers, which include Automotive, Heavy Equipment, Aerospace, Medical, IT, and other manufacturing industries. In addition to the noted products, Koyo Machinery furnishes engineering expertise to its customers.