Hiroyuki Arai
General Manager of Transportation Business Unit

Since its foundation in 1918, Toyo Denki Seizo has specialized in the manufacture of electrically powered railcars, supplying a number of different traction motors, reduction gears, propulsion systems, auxiliary power units, pantographs and total train control systems all over the world.

TOYO DENKI is the sole maker able to design and manufacture both motors and reduction gears, and has also devoted itself to the development of bogies for low-floor light rail systems. We have expanded our operations by working with overseas manufacturers mainly in the U.S. and China, and are meeting challenges in other new markets as well.

Company Profile

Toyo Denki Seizo K.K., a manufacturer headquartered in Japan, is engaged in four main sectors: business and transportation systems, industrial systems, and information systems.

In response to the increasingly diverse and sophisticated needs of Toyo Denki's clients, we are supplying domestic and global markets with a wide range of products and systems, from power electronics to information technologies, thereby contributing to social progress.


In the field of transportation systems, Toyo Denki is a leading manufacturer of electrical propulsion equipment for rail vehicles, especially pantographs, VVVF inverters, traction motors, couplings and reduction gears.

We combine advanced automated FA systems with artisan skills to address the sophisticated needs of Toyo Denki's customers. By developing future technologies that meet the needs of both the global environment and humankind, Toyo Denki consistently strives to deliver products and services that help reduce adverse environmental impact.


Global Networks & Customers in the World



  • East Japan Railway Company (JR East), E5 series "Hayabusa"
  • Central Japan Railway Company (JR Central), N700 Series "Nozomi"
  • West Japan Railway Company (JR West), N700 Series "Nozomi"
  • Keisei Electric Railway Co., Ltd., AE series "New Keisei Skyliner Express"
  • Hiroshima Electric Railway Co., Ltd., 5100 Series


  • Beijing Subway, Lines 1, Fuba, 9, 10, Batong, Yizhuang (People's Republic of China)
  • Chengdu Metro, Line 1 (People's Republic of China)
  • Dallas Area Rapid Transit (DART) (USA)
  • Panama Canal Authority (Republic of Panama)


VVVF inverters, auxiliary power supply equipment, gear units, traction motors, couplings, pantographs, master controllers, door operating equipment, monitoring equipment, train information systems



Transportation Business Division
Tokyo Tatemono Yaesu Bldg., 1-4-16, Yaesu Chuo-ku, Tokyo, 103-0028, Japan
Tel: 03-5202-8131 (when dialing from outside Japan: +81-3-5202-8131)
Fax: 03-5202-8149 (when dialing from outside Japan: +81-3-5202-8149) (Please contact us in English.)


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