History

As a pioneer in domestic grinder manufacturing, Okamoto Machine Tool Works developed the domestic production number 1 gear grinder and surface grinder, respectively in 1930 and 1953. Since then, we have delivered all kinds of products to the world, worthy of a comprehensive abrasive processing tools manufacturer. Our high precision, high quality machines are operating in all parts of the world. With a collection of tradition and wisdom of 70-odd-year workmanship inherited from a successive generation of masters, we will continue to create machines demanded by time.

1926	Kakusaburo Okamoto established the Okamoto Special Purpose Machine Tool Works.
1930	Completed the first domestic production of the Gear Grinder Model ASG-2.
1935	Changing of the organization and company name. Incorporated Okamoto Machine Tool Works, Ltd.
1953	Completed the first domestic production of the Surface Grinder Model PSG-6.
1955	Developed the first domestic production of the External Blade Type Slicing Machine Model PSG-3Ge.
1963	Listed on Tokyo Stock Exchange, 2nd Section.
1968	Developed the world’s first CNC Surface/Profile Grinder Model NFG-5.
1972	Established Okamoto Corporation, a local subsidiary in Chicago, USA as a distributor.
1973	Established Okamoto (Singapore) Pte. Ltd., a local subsidiary in Singapore, the first to manufacture the machine tools locally.
1982	Annaka Plant in Gunma Prefecture completed and started production.
1987	Established Okamoto (Thai) Company Ltd., a local subsidiary in Thailand.
1992	Established Okamoto Machine Tool Europe GmbH, a subsidiary in Germany.
1994	Okamoto Singapore was ISO9002 certified (the first in the machine tool industry for the Asia region).
1995	Opened a branch in Singapore, as a sales and service base.
1997	Awarded with JSME (The Japan Society of Mechanical Engineers) Technology Award for developing a fully automatic vertical high precision surface grinder. Awarded with JSAT (The Japan Society for Abrasive Technology) Technology Award for developing fully automatic high precision and high efficiency CMP equipments .
2002	Established a representative office in Shanghai, China.
2005	Completed the Clean Room for testing and inspecting semiconductor equipments at the Annaka Plant.
2005	Completed the Okamoto Thai new assembly plant.
2005	Completed the processing and assembly booth with a constant temperature environment at the Annaka Plant.
2006	Completed the Spindle Room at the Annaka Plant.
2006	Completed the Okamoto Thai new casting plant. (With both new and old plants, the production capacity will be 1800 tons per month.)
2007	Completed the Okamoto Thai plating and coating plant.
2007	Completed the world’s largest Ultra-Precision Double Column Type Surface Grinder UDG10035NC in the hydrostatic pressure guideway system as Annaka Plant equipment.