| Established | March 3, 1938 |
| Capital | ¥100 million |
| Directors |
|
| Number of Employees | TAMAGAWA SEIKI CO., LTD. : 642 (as of November 21, 2024) Consolidated : 2,537 (as of November 21, 2024) |
| Plants | Headquarters 1879 Oyasumi, Iida-shi, Nagano, 395-8515, Japan First Plant 1879 Oyasumi, Iida-shi, Nagano, 395-8515, Japan Second Plant 1020 Kega, Iida-shi, Nagano, 395-8520, Japan Third Plant 3174-22 Motoojima, Matsukawa-machi, Shimoina-gun, Nagano, 399-3303, Japan Hachinohe Plant/First Hachinohe Factory 1-3-47 Kitainter Kogyodanchi, Hachinohe-shi, Aomori, 039-2245, Japan Hachinohe Plant/Second Hachinohe Factory 1-147 Kitainter Kogyodanchi, Hachinohe-shi, Aomori, 039-2245, Japan Hachinohe Plant/First Fukuchi Factory 1-1 Kanuemonyama, Hoshioka, Nanbu-cho, Sannohe-gun, Aomori, 039-0811, Japan Hachinohe Plant/Second Fukuchi Factory 3-23 Niuemonyama, Hoshioka, Nanbu-cho, Sannohe-gun, Aomori, 039-0811, Japan Hachinohe Plant/Misawa Factory 2-100-1 Otsu, Misawa-shi, Aomori, 033-0134, 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.), IMU, automatic control equipment and bio research reagents. |
| Capital | ¥14.65 million |
|---|---|
| Established on | April 3, 1984 |
| Honorary Board Chairman | Hiroyuki Hagimoto (Ph.D., in Mechanical Eng'g.) |
| Board Chairman & CEO | Yasuo Hagimoto |
| President & COO | Tadanori Matsuo |
| Managing Director | Masahiro Shiozawa |
| Auditing Director | Masashi Uryu |
| Auditing Director (Part time) |
Yusuke Kishimoto |
| Headquarters | 1-3-1 Habacho, Iida-shi, Nagano, 395-0063, Japan Tel: +81-265-56-5423 Fax: +81-265-56-5427 |
| International Aviation Marketing Sales Department | 1-3-1 Habacho, Iida-shi, Nagano, 395-0063, Japan
Tel: +81-265-21-1814 Fax: +81-265-56-5427 |
| Representative Office in Taiwan | 436 Bo-Ai 3rd Road, Kaohsiung 813, Taiwan, R.O.C Mobile Phone:+886-922-024-645 Tel＆Fax: +886-7-3502257 |
No.8 San He Road, Ludu, Taicang, Jiangsu, CHINA
TEL:+86-512-53200790 FAX:+86-512-53200786
Emmy-Wechßler-Weg 7, 89077 Ulm, Germany
URL:http://tamagawa.eu/
TEL:+49 731 96 33 89 51 FAX:+49 731 96 33 89 57
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TAMAGAWA SEIKI (now Ota Ward, Tokyo) founded
TAMAGAWA SEIKI Youth School opened
| 1938 | TAMAGAWA SEIKI (now Ota Ward, Tokyo) founded |
| 1939 | TAMAGAWA SEIKI Youth School opened |
Type 97 oil gauge, prototype gyros
for bombing sights
Opened Iida Plant (Iida, Nagano Prefecture)
Screw tapping machine
| 1944 | Produced Type 97 oil gauge |
| Opened Iida Plant (Iida, Nagano Prefecture) | |
| 1945 | Delivered prototype gyros for bombing sights |
| Head office destroyed by fire during the war. With the end of the war, production scale was drastically reduced | |
| 1949 | Developed screw tapping machine |
Special electric motors for ships
Stator pole-type selsyns
Synchros certified by the Defense Agency
| 1950 | Manufactured special electric motors for ships |
| Manufactured stator pole-type selsyns | |
| 1954 | Manufactured synchros certified by the Defense Agency |
| 1959 | Produced rolling mill control systems as applied products of instrument motors |
| Developed an absolute coordinate holding device (with built-in gyroscope) for ship launching |
Manufacturing gyro devices
Analog-to-digital converters and
digital-to-analog converters
Feedback units for NC machine tools
| 1960 | Began manufacturing gyro devices using special processing technology |
| 1967 | Produced analog-to-digital converters and digital-to-analog converters |
| 1968 | Produced feedback units for NC machine tools |
Step motors for floppy disk and
hard disk drive mechanisms
Synchro Pack and Servo Pack units
for the H‑I rocket
High-precision multi-polar synchro for Nobeyama Radio Observatory (NRO)
| 1973 | Formed a technical partnership with BEI (USA) to develop an ultra-high-precision Optical Rotary encoder |
| 1974 | Successfully mass-produced brushless resolvers |
| 1976 | Began sales and technical support for borehole survey systems through a partnership with Humphrey Inc. (USA) |
| Developed trackball | |
| 1977 | Mass‑produced step motors for floppy disk and hard disk drive mechanisms, exporting them to the United States |
| Synchro Pack and Servo Pack units were installed in the H‑I rocket | |
| 1979 | Developed a high-precision multi-pole synchro for the antenna at the National Astronomical Observatory of Japan's Nobeyama Radio Observatory, achieving angular precision in the 3‑arc‑second range |
Step motors for driving throttle machines
Helicopter-mounted LVDT
Magnetic encoders
| 1980 | Concluded agreements with Northrop Corp. (USA) regarding gyro devices, and with BEI (USA) for support and licensing of RMS (Rocket Management System) and Ultra‑Lock (ultra‑precision rotary device) |
| 1982 | Produced step motors for driving throttle machines |
| 1984 | TAMAGAWA SEIKI's sales division split into three companies (now TAMAGAWA TRADING CO., LTD.) |
| In conjunction with the domestic production of the AH-1S helicopter, a licensing agreement was concluded with BEI Corporation (USA) | |
| 1985 | The first helicopter-mounted LVDT was developed |
| We entered into technical manufacturing partnerships with Astronautics Corporation of America (USA) for attitude indicators and with Northrop Corp. (USA) for DTG (Dynamically Tuned Gyro) systems, and began domestic production | |
| 1986 | We entered into technical partnerships with Simmonds Precision Products (USA) for the manufacture of transmission pressure and temperature measurement systems and fuel level warning systems, and began production |
| 1989 | We developed magnetic encoders |
Singlsyn for Prius(HEV)
The Hachinohe Plant was opened
"TBL-i II Series" AC servo motor
| 1991 | Established our first manufacturing subsidiary, Hachinohe Tamagawa, in Aomori Prefecture (now TAMAGAWA HIGHTECH CO., LTD.) |
| 1993 | Began sales of the brushless resolver “Smartsyn” with an automated winding process |
| Established Misayama Microtep Co., Ltd. (now TAMAGAWA MICROTEP CO., LTD.), a manufacturer of mass-produced motors and other products | |
| Developed the AHRS (Attitude Heading Reference System) equipped with a ring laser gyroscope | |
| 1994 | Relocated headquarters to Iida, Nagano Prefecture |
| Developed the brushless resolver "Singlsyn" for the RAV4 (EV) | |
| Developed an encoder for Earth sensors mounted on satellites | |
| 1995 | Established Camtep Co., Ltd. (now TAMAGAWA MICROTEP CO., LTD.), a manufacturer of mass-produced motors and other products |
| 1997 | The Prius (HEV) equipped with the brushless resolver "Singlsyn" was released |
| 1998 | Three sales companies were merged to establish "TAMAGAWA TRADING CO., LTD. " |
| 1999 | The Hachinohe Plant (Hachinohe, Aomori Prefecture) was opened |
| The "TBL-i II Series" AC servo motor was developed |
Opened the "Second Plant"
Opened the " Third Plant"
Opened the First Fukuchi Factory, the Second Fukuchi Factory and Misawa Factory
| 2001 | T-S Electronics, Inc. (now TAMAGAWA S SEIKI ELECTRONICS CO., LTD.) is established in Yasuoka, Nagano Prefecture (the founder's hometown). |
| Developed Pumps and actuators for large transport aircraft and large patrol aircraft | |
| Developed motors for vertical articulated robots | |
| 2002 | Concluded an agreement to transfer the aircraft electrical equipment business from Mitsubishi Electric Nagoya Works |
| 2003 | Opened the "Second Plant" (Iida, Nagano Prefecture) |
| 2005 | Opened the "Third Plant" (Matsukawa, Shimoina-gun, Nagano Prefecture) |
| Established Matsukawa Motortronics Co., Ltd. (now TAMAGAWA MOTORTRONICS CO., LTD.) as a group company responsible for manufacturing | |
| Established TAMAGAWA LOGISTICS CO., LTD. to handle logistics | |
| Concluded a comprehensive collaboration agreement with Shinshu University's Faculty of Engineering aimed at R&D and new business creation | |
| Developed products for the pilot control system on the Boeing 787 | |
| 2006 | Opened the First Fukuchi Factory (Nanbu, Aomori Prefecture) |
| 2007 | Launched the "SV-NET" network servo system |
| Established TAMAGAWA HONG KONG LIMITED, the first local subsidiary in Hong Kong | |
| Established TAMAGAWA AEROSPACE ELECTRICAL EQUIPMENT CO., LTD., a manufacturer of aircraft electrical components | |
| Established TAMAGAWA TECHNOCREATION CO., LTD. which handles design, technical support, and production technology support | |
| 2008 | Opened Misawa Factory (Misawa, Aomori Prefecture) |
| Became the first private company to be certified as an angle calibration business under the Japan Calibration Service System (JCSS) under the Measurement Act | |
| Established TAMAGAWA MOBILE EQUIPMENT CO., LTD. a manufacturer of automotive sensors | |
| Concluded an agreement with Fujitsu Media Device Products to transfer its piezoelectric tuning fork gyroscope and other business operations and acquire a factory | |
| Acquired all shares of Santoku Aviation Electrical Component Co., Ltd. (now TAMAGAWA AERO SYSTEMS CO., LTD.), a commercial aircraft repair company | |
| 2009 | Established TAMAGAWA GYROTRONICS CO., LTD. (now TAMAGAWA MOBILE EQUIPMENT CO., LTD.) |
| Opened the Second Fukuchi Factory (Nanbu, Aomori Prefecture) | |
| Opened the Taiwan Representative Office | |
| Began sales of MEMS gyros | |
| Launched magnetic beads for protein purification, "FG beads." | |
| Began sales of borehole curvature measurement device "TUG‑NAVI." |
Established TAMAGAWA SEIKI SUZHOU CO., LTD.
RVDTs for the B-737MAX
Opened the Second Hachinohe Factory
| 2010 | Established TAMAGAWA SEIKI SUZHOU CO., LTD. the first overseas manufacturing company, in Taicang, China |
| Established TAMAGAWA LINKS CO., LTD. a special subsidiary of TAMAGAWA SEIKI | |
| 2011 | Established TAMAGAWA MICROTEP CO., LTD. a merger of three group companies: Misayama Microtep Co., Ltd., Camtep Co., Ltd. and TAMAGAWA Aerospace Co., Ltd. |
| 2012 | Multi-pole, multi-speed resolvers installed on the Mars rover "Curiosity" |
| TAMAGAWA SEIKI Germany Representative Office opens in Ulm, Germany, as its first European base | |
| TAMAGAWA MOBILE EQUIPMENT CO., LTD. merges with TAMAGAWA GYROTRONICS CO., LTD. | |
| 2013 | Omori Seikoki Co., Ltd. (now TAMAGAWA SKY PRECISION CO., LTD.) becomes a wholly owned subsidiary after acquiring all shares |
| TAMAGAWA PARTS MANUFACTURING CO., LTD. is established | |
| The Singapore Representative Office is opened in the Republic of Singapore as a base for Southeast Asia | |
| 2014 | Established "TAMAGAWA EUROPE GmbH" |
| Certified as a Tier 1 supplier of RVDTs for the B-737MAX | |
| ShindaiSat (Ginrei), a visible light communications experimental satellite developed in collaboration with Shinshu University, successfully launched into orbit | |
| 2015 | Step motors and machined parts installed on the asteroid probe "Hayabusa 2" |
| Opened a US representative office in Torrance, California | |
| 2016 | TAMAGAWA MICROTEP CO., LTD. absorbed TAMAGAWA AEROSPACE ELECTRICAL EQUIPMENT CO., LTD. |
| 2017 | Opened the Second Hachinohe Factory in Hachinohe, Aomori Prefecture as a base for the gyro business |
| 2019 | Established TAICANG TAMAGAWA TRADING CO., LTD. as a group company of TAMAGAWA SEIKI SUZHOU |
Multi‑pole multi‑speed resolver for installation on the Mars rover Perseverance
Established "TAMAGAWA VIETNAM CO., LTD "
"TBL-i6α Series" AC servo motor
| 2020 | Developed the IMU "MULTI SENSOR," combining MEMS gyros and fiber‑optic gyros |
| 2021 | Supplied a space‑grade multi‑pole multi‑speed resolver for installation on the Mars rover Perseverance |
| 2023 | Established "TAMAGAWA VIETNAM CO., LTD " in the Ha Long Industrial Park, Amata City, Quang Ninh Province, Vietnam. |
| 2024 | Launched sales of the "TBL-i6α Series" AC servo motor |
