The GPA (Gear Production Alliance) is an alliance of Kanzaki Kokyukoki , Nachi Fujikoshi and Kashifuji.

These three companies have an enormous amount of experience and outstanding technologies in the gear production field. In 2002, they entered into a technical agreement involving machines and cutting tools used for gear production.

We offer a total solution of combined equipment and machines, including related cutting tools with consistent, dependable customer support.

Company Kanzaki Kokyukoki Manufacturing Co., Ltd. NACHI-FUJIKOSHI CORP. Kashifuji Works, Ltd. Headquarters Amagasaki-city, Hyogo-prefecture Toyama-city, Toyama-prefecture Kyoto-city, Kyoto-prefecture Features ▶Providing machine tools with outstanding gear finishing technologies accumulated while supplying to its parent company“Yanmar”. ▶Holding the largest market share of high precision finishing machines such as Shaving Machines and Honing Machines etc. ▶Holding the largest market share of the gear cutting tools for Precision Gear Production and Broaching Machines. ▶Having advanced technologies of Heat Treat Equipment such as a Vacuum Carburizing Furnaces. ▶Holding the largest market share of Hobbing Machines. ▶Providing Hobbers with specifications for complete dry cut hobbing or hard hobbing for the finishing process.