• Organization TypeWorks & Construction, Service Providers
  • HeadquartersJapan
  • Founded1947


More than 70 years as a boring specialist KOKEN BORING MACHINE CO.,  LTD. was founded in 1946 , when the entire country was in the unstable social period right after the Second World War. Our products/services have taken the leading positions for the country's civil engineering areas: grouting, probing work for tunnel investigation, anchoring, water well construction, hot spring construction, geologic drilling, piling, raise boring and lots of others. Company Name: KOKEN BORING MACHINE CO.,LTD. Market code in JASDAQ (Ticker): 6297 Founded: October 16 , 1947 Capital: JPY 1,165,415,503 Nature of Budiness: Manufacturing and Sales of Drilling and Grouting Machines and their Associated Equipment; Contracting for All Types of Drilling and Grouting Works; Consulting for Civil Engineering; Consulting and Contracting for Groundwater Development President CEO: Sachihiro Suenaga Number of employees: about 230 Head quarters Address 1st Floor, Mejiro Nakano Bldg., No. 17-22, Takada 2-chome,Toshima-ku,Tokyo 171-8572,Japan Telephone 81-3-6907-7515(International Division) Facsimile 81-3-6907-7525(International Division) E-mail id-eigyo@koken-boring.co.jp URL: www.koken-boring.co.jp Branches in Japan: Sapporo, Sendai, Niigata, Kanazawa, Tokyo, Nagano, Osaka, Takamatsu, Yamaguchi, Fukuoka, Kumamoto Factories Atsugi: 3012-2 Uenohara Kamiichi Atsugi-city Kanagawa-pref. 243-0801 Japan Telephone:81-462-85-1331 Suwa: 1081-3:Simoharayama Hara-mura Suwa-gun Nagano-pref, 391-0100,Japan Telephone:81-266-79-6011 Subsidiaries: KOZO CONSTRUCTION CO.,LTD. Other Facilities: KOKEN Earth Science Museum; KOKEN Lodge Highland Banks: Mizuho Bank, Ltd. The Bank of Tokyo-MitsubishiUFJ, Ltd, Mizuho Trust & Banking Co., Ltd. Sumitomo Mitsui Banking Co. The Hachijuni Bank, Ltd. Development Bank of Japan
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Company Offices

  • Japan (headquarters)
  • Tokyo
  • 1st Floor, Mejiro Nakano Bldg., No. 17-22, Takada 2-chome,Toshima-ku,