Brush & Brushless Direct Drive DC Motors

General Dynamics offers a comprehensive line of DC brushless and brush-type motors designed to meet a wide range of requirements. We also design and develop DC torque motors to meet custom specifications. Common applications for General Dynamics direct drive DC motors include aerospace and defense platforms such as radar, missile seekers and electro stabilized systems.

The direct drive DC torquer motor is ideally suited to high acceleration applications requiring improved response for rapid start/stop actions. We also offer limited angle brushless, slot-less torque motors that do not require commutation electronics and have near zero cogging. Our DC motors:

  • Save space and weight while generating maximum power output
  • Eliminate errors caused by friction and backlash
  • Create a high performance positioning system

Product Details

Brush Type DC Motors

General Dynamics' brush type DC torque motors are engineered for high performance, low cost, and quick delivery. These motors are tooled and designed for producibility. High energy product Samarium Cobalt (SmCo) magnets combined with optimum motor windings provide the maximum torque and performance available in a broad range of frame sizes (1.125” - 5.125” OD). In addition to our standard products, we have decades of experience ready to satisfy the most demanding specification with thousands of models from our proven design data base.

View our full 2016 Brush Type DC Motor catalog

Brushless DC Motors

Brushless DC motors have the same electrical performance operating (transfer function) characteristics as brush-commutated DC motors, and can be used in the same applications. They provide high starting torque, variable bi-directional speed operation, and precision position and velocity servo loop capabilities. They can also replace AC motors in spindle and rotary table drives where the higher torque DC motor can drive the spindle directly, eliminating the need for a belt and pulley.

View our full 2016 Brushless Type DC Motor catalog

Customer Support

At General Dynamics, service does not end with the delivery of your products. Service and support are our most important responsibilities, and we meet them with our network of technical support staff that stretches around the world.

For customer support for our Brushless and Brush Type DC Motors, you may contact us by email, phone, or fax.

Phone: 619-671-5400
Fax: 619-671-9292

DC Torque Motor Characteristics

One of the most useful rotating components available to the control system design engineer is the direct-drive DC torque motor. This versatile control element is a permanent-magnet, armature-excited, continuous rotation motor with the following features especially suited to servo system drive and actuation applications:

Why Should You Choose DC Torque Motors?




  • No gear train
  • Direct mounting on the driven shaft
  • High torque at low speeds
  • High torque-to-inertia ratio
  • High torque-to-power
  • Linear torque speed characteristics
  • Low electrical time constant
  • Convenient for factors
  • Simple, rugged construction

  • High coupling stiffness
  • Fast response
  • Precise positioning
  • High tracking accuracy
  • Excellent stability
  • Low input power
  • Smooth and quiet operation
  • Compact assembly
  • Improved system reliability