Moog Components Group • www.moog.com/components
system. The Model 918 Servo Actuator
provides the pitch roll-yaw functioning for
this system.
• Size: 11.30 x 4.59 x 6.53 inches
• Power: 115 VRMs, 400 Hz
• Weight: 11 lbs
• Command: ±10 VDC
• Position feedback: resolver
• High efciency steel gearing
• Rate feedback: brushless DC tachometer
• Fail-safe brake: optional
• Inertial loads: to 4200 lbs-in
2
• Scan Modes: 48, 91, 96, 153, 160, 320
480 and 960 rpm
• Sector Mode : ±48°
• Bit test outputs
• Robust structural design
• MTBF: 5000 hrs
Model 918
Our military
qualied Model
918 Rotary Brushless
Stepper Actuator controls
the pitch-roll-yaw function of an antenna
system in conjunction with the Model 917
azimuth drives.
• Size: 4.06 x 2.50 x 4.35 inches
• Power: 20 VDC
• Weight: 2 lbs
• Command: ±10 VDC
• No-load speed: 300 rpm
• Fail-safe brake: none
• Inertial loads: 3 lb-in
2
• Position accuracy: ±0.5°
• Backlash: 30 arc-minutes
• MTBF: 5000 hrs
• Stroke: ±3600°
• Robust structural design
• High efciency steel gearing
Model 961 and 962
Our Model 961 Rotary Actuator in conjunction
with the Model 962 Transconductance
Amplier may be used for the antenna’s
azimuth and elevation rotary function, or
similar high torque applications.
Model 971
Our military qualied Model 971 Rotary,
Brushless, Stepper
Motor. Limited
Rotation Trim
Actuator for the
military helicopter.
• Size: 3.0 x 3.48 x 6.56 inches
• Power: 28 VDC
• Weight: 3.2 lbs
• Holding torque: 200 in-lbs
• Command: four phase stepper motor
control from an external amplier
• Stroke: ±30°
• Step rate: 1 rpm
• Step size: 0.1°
• Load rate: 15 in-lbs @ 0.6 rpm
• Eddy current damper
• Backlash: 0.15°
• MTBF: 5000 hrs
Model 993
Our Model
993 Rotary
Servo Actuator
provides mechanical
valve control of the
aircraft’s hydraulic ight control surfaces.
• Size: 4.10 inch diameter x 7.9 inches
• Power: 28 VDC
• Power point: 200 in-lb @ 96 deg/sec
• Weight: 7.4 lbs
• Peak torque: 205 in-lb
• Brushless motor with Hall sensor
electronic commutation
• Brushless RVDT position transducer
• Derived tach signal
• BIT logic outputs
• Robust structural design
• Clutched output
• High efciency spur gearing
• Pulse width modulated motor power
• Tach signal output
• ±10 VDC input command signal to
position signal output
• Torque output limit electronics
• Position or rate servo operation
• Low backlash
• High reliability - 60,000 hour MTBF
• No load speed: 110 deg/sec
• Stroke: ±120°
• Size: 3.055 x 3.055 x 8.24 (961 only)
• Power point: 750 in-lb @ 30 rpm
• Weight: 13.6 lbs
• Peak torque: 1100 in-lbs
• Qualied design
• Rugged construction
• Brushless permanent magnet DC motor
• Broad operating temperature range
• E.M. brake with manual operation
• 150 VDC system
• ±10 VDC position command signal
• No load speed: 40 rpm
Model 965
The Model 965 Rotary
Servo Actuator is
used to position the
control surfaces plus
utility applications in
unmanned air vehicles.
This unit is designed to operate under the
demanding environmental requirements
seen worldwide.
• Size: 3.50 x 7.10 x 8.90 inches long from
front of mounting ange to rear of housing
• Power: 28 VDC
• Rated Power Point: 2200 in lbs @ 35
deg/sec
• Weight: 10.7 lbs
• Peak torque: 2500 in lbs
• SMCO permanent magnet DC brush motor
• ±10 VDC analog input command
• Robust structural design
• Low endplay
• High efciency steel gearing
• Position output signal
• Electronic position and torque limiting
• Non-jamming mechanical stops
• Film position transducer
• Front ange mount
• Stroke: ±45º electrical stroke
• Bandwidth to 8 Hz
• No-load speed: 87 deg/sec
• MTBF: 5000 hr
Rotary Servo Actuators
