As part of the JTEKT Corporation, Koyo owns and operates eighteen bearing plants in seven countries and 6 R&D Technical Engin ... eering Centers on three continents. Koyo offers innovative solutions to both original equipment manufacturers and aftermarket end users focusing on key markets such as automotive, agriculture and construction, heavy industry (steel & wind mill), machine tool, electric motor and general machinery. Main business activities: manufacture of steering systems, driveline components, machine tools, home accessories and ball & roller bearings. JTEKT Corporation engineering and manufacturing capabilities range from super large bearings with outer diameters of seven meters to miniature bearings with inner diameters as small as one millimeter. Utilizing new materials and the latest in manufacturing technology, JTEKT Corporation has developed hybrid ceramic bearings and a variety of extreme special environment bearings to meet the increasingly severe and demanding requirements of modern industries. JTEKT Corporation stands at the forefront, as a technological leader in the World Bearing Industry. In addition, JTEKT Corporation has utilized the technical base established through these main products to develop other products as well, including factory automation products, various precision instruments, heat treatment furnaces, electronics devices and others. read more