Model 820 Rotary Actuator


Model 820 Rotary Servo Actuator

The Model 820 rotary servo actuators utilize brushless DC motors as the prime mover within the design. The 820 Rotary Servo Actuators are used to position the throttle and control surfaces of a Remotely Piloted Vehicle (RPV). These actuators are designed to operate under extreme environmental conditions.

For more information about how the model 820 rotary actuator can be tailored to fit your specific application, contact our applications engineers.


  • Small size and weight
  • Power compatibility - 28 VDC
  • Power point - up to 230 deg/sec at 60 in-lbs
  • Torque output - up to  150 in-lbs*
  • Brushless DC motor
  • Position and torque limiting
  • High accuracy film transducer
  • Position output signal/feedback
  • RS-422/RS-485 command options
  • Operates with various command inputs
  • Low backlash
  • Stroke or displacement up to ±90 degrees
  • High efficiency steel gearing

*Typical values. Contact factory for available gear ratios.


  • Robust structural design
  • Mechanical stops
  • Low weigh to power performance
  • Customization available
Model 820 Specifications
Size (inches) 1.5 x 3.2 x 4.3
Torque (in-lbs)
80 Rated
150 Peak
Stroke ±45° Plus Others
Weight (lbs) 2.8

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Typical Applications

  • Unmanned air vehicles - tactical, medium long endurance and UCAV vehicles
    • Control surfaces requiring servo actuation
  • Target drones - surface control, speed brakes
  • Utility actuation - throttle control, doors, spoilers
  • Helicopter - manned or unmanned
    • Swash plate or flap control