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Company Profile
We strive to become more environment-friendly, to become an enterprise worthy of ever-greater trust by our customers.

Since its foundation, Tamagawa Seiki has taken up the challenge of angular precision for control equipment, such as high-precision sensors, motors and gyros, and successfully delivered such equipment to its customers.
We are now one of the few makers in the world with the capability to develop and manufacture both two-dimensional and three-dimensional (spatial) position/angle sensors.
We have applied leading-edge high-precision sensor technology to our "Motion System,"whose fields of application are extending even to the space industry.
Established | March 3, 1938 |
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Capital | ¥100 million |
Directors | Board Chairman & CEO : Hiroyuki Hagimoto (Ph.D., in Mechanical Eng'g.) President & COO : Shigeo Seki Senior Managing Director : Hideo Kumagai (Ph.D., in Electrical Eng'g.) Senior Managing Director : Hiroshi Hagimoto Senior Managing Director : Masashi Uryu Senior Managing Director : Yasuo Hagimoto Senior Managing Director : Tadanori Matsuo Managing Director : Kazuyuki Miyazawa Director : Makoto Yamaguchi Director : Tadasu Takigawa Auditing Director : Toshiaki Ito Auditing Director (Part time) : Akira Teranishi |
Number of Employees | TAMAGAWA SEIKI CO., LTD : 644 (as of November 21, 2022)
Consolidated : 2,457 (as of November 21, 2022) |
Plants |
Headquarters 1879 Ohyasumi, Iida, Nagano Prefecture, 395-8515 Japan First Plant 1879 Ohyasumi, Iida, Nagano Prefecture, 395-8515 Japan Second Plant 1020 Kega, Iida, Nagano Prefecture, 395-8520 Japan Third Plant 3174-22 Moto-Ohjima, Matsukawa, Shimoina-gun, Nagano Prefecture, 399-3303 Japan Hachinohe Plant 1-3-47 Kita-inter Kogyo-danchi, Hachinohe, Aomori Prefecture, 039-2245 Japan Tokyo Office 3-19-9 Shinkamata, Ohta-ku, Tokyo, 144-0054 Japan |
Major Operations | Contract manufacturing, Sales and service of servo components (encoder, resolver, rate sensor, gyro, AC servomotor / driver / controller, step motor / driver, synchro, LVDT etc.), Surveillance Camera System, IMU, automatic control equipment and bio research reagents. |
Sales | TAMAGAWA SEIKI CO., LTD : ¥ 41.7 billion (as of November, 2021)
Consolidated: ¥ 68.6 billion (as of November, 2021) *November 20 is our account settlement date |
Sales Company | TAMAGAWA TRADING CO., LTD. Board Chairman & CEO : Hiroyuki Hagimoto (Ph.D., in Mechanical Eng'g.) President & COO : Shigeo Seki Senior Managing Director : Yasuo Hagimoto Director : Masahiro Shiozawa Director : Tadasu Takigawa Auditing Director : Toshiaki Ito Auditing Director (Part time) : Akira Teranishi |
Group Company | Tamagawa Hightech Corporation Tamagawa Microtep Co., Ltd. Tamagawa Seiki Electronics Co., Ltd. Tamagawa Logistics Co., Ltd. TAMAGAWA MOTORTRONICS CO., LTD. TAMAGAWA HONG KONG LIMITED Tamagawa TECHNOCREATION CO., LTD. TAMAGAWA MOBILE EQUIPMENT CO., LTD. TAMAGAWA AERO SYSTEMS CO., LTD. Tamagawa Seiki Suzhou Co., Ltd. Tamagawa Links Co., Ltd. Tamagawa Sky Precision Co., Ltd. Tamagawa Parts Manufacturing Co., Ltd. Tamagawa Europe GmbH TAICANG TAMAGAWA TRADING CO., LTD. |
Major Clients | Mitsubishi Heavy Industries; Kawasaki Heavy Industries; Fuji Heavy Industries; Mitsubishi Electric; NEC; Toshiba; Hitachi; Matsushita Electric Industrial; TOYOTA; HONDA; ABB Automation Technology Products AB;Honeywell Inc.; Rockwell Collins Ministry of Defense ; Japan Aerospace Exploration Agency etc |