TAMAGAWA日本多摩川精机株式会社成立于1938年。TAMAGAWA多摩川会社成立近70年来，作为精密机械和多种检测机械工具制造商，从航空、宇宙、国防工业，到电机、传感器等民用工业设备，其一直保持世界领先的地位。在自动化控制系统领域，一直本着“科学起步于测量”理念，一直为使用电机、同步器、编码器和其他角度、位置传感器的工业和科研用户做出显著的贡献和服务。

自进入中国十余年来，仅仅编码器和伺服电机产品，TAMAGAWA多摩川就已经占到市场近80%的份额。

航空、宇宙、相关产品 
TAMAGAWA多摩川精机技术在人造卫星天线用电机、航空飞机用电子装备品及飞机、船舶用相机空间平衡、稳定化装置等方面发挥着充分的作用。 

工厂自动化设备相关产品 
TAMAGAWA多摩川传感器技术、控制技术有效用于机器人、数控机床、半导体制造装置、包装机械及食品机械等的定位及速度控制领域。 

游戏自动化设备相关产品 
日本的代表性“弹子机”弹球用的电机及“老虎机”的卷轴旋转方面，都装有TAMAGAWA多摩川精机的电机。另外，潜水艇及游艇上也装有TAMAGAWA多摩川精机的电机。 

机车相关产品 
在我们生活中，以混合式车为主的汽车、新干线、自动扶梯及电梯等通过电子控制工作的交通工具不断增多。控制这些交通工具的重要传感器，有检测速度、检测高速转变时的倾斜(滚动角)，进行有效控制的传感器等。高效率、高精度并充分考虑环保的TAMAGAWA多摩川精机的技术得到了充分运用。

科学设备相关产品 
TAMAGAWA多摩川精机的伺服元件和控制技术不仅活跃在技术革新显著的尖端科学(遗传因子、纳米技术等)方面的分析、试验装置及医疗、诊断领域中，而且还被广泛地应用于社会福利事业设备的DC电机、传感器及自动化、省力化装置。
 
另外，TAMAGAWA多摩川精机在医疗护理器材中的DC电机·感应器、以及电动化·便利化装置方面，也得到广泛的应用。

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.

Business lines of Tamagawa
Servo components (encoders, resolvers, rate sensors, gyros, AC servo motors, DC servo motors, step motors, torque motors, alternators, LVDTs, etc.); Motor driver controllers; Robots; Inertial measuring units; Automatic control devices

The history of Tamagawa Seiki Co., Ltd. can be traced back to March 1938, when the company's founder, Hiroichi Hagimoto, established the company near the Tamagawa River in the south of Tokyo. In 1942, he set up the Iida plant in his hometown, Iida city of Nagano prefecture, to contribute to regional industrialization.

After World War II, we immediately started to develop, produce and sale instrument motors anticipating diverse needs of the age. The business was expanded to automatic control equipments and aerospace instruments with the motto "grow technology and sale technology". The technology is symbolized by our registered trademarks, "Motortronics", "Spacetronics", "Smartcoder" etc.

After the collapse of the Bubble Economy in 1991, Tamagawa Seiki resolved not to move its factories to overseas and to continue the domestic development and production. Besides we made the policy of being a privately-held company.

From the perspective of dispersion of risk, Hachinohe Tamagawa Co., Ltd. (present Hachinohe High-tech Co., Ltd.) was founded in Hachinohe City, Aomori Prefecture as our base in the northeastern region of Japan in 1991. Head office was moved from Tokyo to Iida in 1994. Hachinohe Plant with Motioncontrol Research Institute was opened in 1999.

The year of 2000 saw the opening of our Second Plant in Iida and all of our commercial use production was moved to there. After then, our conventional headquarters has been reorganized as "Headquarters and First Plant". The Spacetronics Research institute was founded in the First Plant which will be tasked with development and production of products for aviation and space-related industries, to which technologies of Gyroscopes or others are applied, including electric components for aircraft transferred from Mitsubishi Electric Nagoya Works. We are planning to develop and manufacture components for commercial aircraft of all over the world.

In the fall of 2005, the Third Plant was established in Matsukawa town, north of Iida City. The Third Plant along with the Second Plant is the specialized base for development of robot or car parts. The Motortronics Research Institute was created in the Second Plant and it produces world class products such as the angle sensor for hybrid vehicles (Singlsyn).

In the Hachinohe region, according to the expanding of Hachinohe Plant, new factories were opened; Fukuchi Factory (present First Fukuchi Factory) in 2006, Misawa Factory in 2008 and Second Fukuchi Factory in 2009.

Tamagawa Seiki continues research and development of three base technologies, the Synchro which detect the angle with high accuracy (2 dimensions), the Gyroscope which is necessary for three dimensional controls and the analog/digital convertor (Smartcoder). We have been working, since the foundation, to improve the accuracy of our angle sensors by just a factor of ten per decade.

We are determined to continually train the strength of product development and sales forces, to flexibly meet customer's requests by our product quality and performance and to grow up as a "Glocal (Global + Local ) Company" which can supply the only /number one products. Your continued patronage and support would be highly appreciated.