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Electric Torque Machines "ETM"

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Headquartered in Flagstaff, Arizona, Electric Torque Machines, Inc. is a private company developing and manufacturing direct drive motors that are used in a variety of applications such as fans.[1], pumps[2], conveyors[3] and others. The company developed a new design for direct drive motors and holds over 20 patents.[1] The focus of the company is developing direct drive motors for high torque applications without the use of a gearbox. The company released its direct drive motor and controller designs commercially beginning in 2013[1]


The company’s development has been focused on high torque, low speed direct drive motors, with a proprietary design that, instead of using coils that wind in and out of stator teeth, use ring-shaped coils requiring much less materials[1]. Due to its high magnetic pole count and higher continuous torque output, the motors claim size, efficiency and weight advantages over AC Induction Motors and Brushless DC (BLDC) motors.[4]


The company received the Arizona Innovation Challenge Award in 2017 and has spent over $30 Million on product development.[4]


  1. 1.0 1.1 1.2 1.3 Olson, Kaitlin. "Electric Torque Machines: Local company with global impact". Arizona Daily Sun. Retrieved 11 January 2019.
  2. "Pump Industry Awards 2018 Finalists". Process Industry Informer. PIAB Ltd. 2018-02-21.
  3. "Dorner's New Universal Drive Simplifies Motor and Mounting Package Options for 2200 Series Conveyors". Dorner Mfg Corp. 2016-03-21. Retrieved 11 January 2019.
  4. 4.0 4.1 "Arizona Innovation Challenge Spring '17: Electric Torque Machines Builds Motors That Save Money, Energy". TechConnect. Arizona Technology Council and Arizona Commerce Authority. Retrieved 11 January 2019.

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