Model 250


Moog Model 250 Rotary Electromechanical Actuator develops up to 1400 lb-in of stall torque with a 48 VDC input at 25°C. It integrates a high performance brushless DC motor with Hall Effect devices, a highly accurate planetary gearbox, commutation resolver and power-off brake. Model 250 is designed to meet challenging environmental conditions, and can operate in both continuous and limited angle motion profiles. The spur gear output shaft can withstand heavy axial and radial forces, allowing the actuator to be adapted to a variety of applications.

For more information about how the model 250 continuous rotation actuator can be tailored to fit your specific application, contact our applications engineers.


  • 1,400 lb-in peak torque
  • Rugged design
  • Assembly integrates:
    - High performance DC brushless motor
    - Resolver
    - Planetary gearbox
    - Power-off brake
  • High output torque per volume or weight
  • Low inductance for maximum dynamics
  • Low mechanical backlash for precise positioning
  • Supports high radial and axial loading


  • Can be operated in limited rotation or full 360° continuous operation
  • Mounting plate and output shaft can be modified for specific applications
  • Use of brushless motor allows for higher peak torque and longer life as compared with a brush-type motor
  • Rugged design and construction allows assembly to be operated under adverse environmental conditions
Size (inches) 3.15 OD x 11.29
Load Torque (in-lbs) 270 in-lbs Rated
Stroke Continuous Rotation
Weight < 8.5 lbs

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Typical Applications

  • Axis motion control for gimbal and pedestal systems
  • Azimuth, elevation, fold / unfold, leveling control
  • Suitable for airborne and ground based systems