Model 863
ROTARY SERVO ACTUATOR
The Model 863 rotary servo actuators utilize brushless DC motors as the prime mover within our design. The available motor technology include use of neodymium magnets. The Model 863 servo is used for surface positioning, throttle control and other utility functions on several UAV and aerospace programs. These actuators are designed to operate under extreme environmental conditions and have been chosen to support new development programs, as well as program requirements.
Our Model 863 is one of our most versatile actuator designs primarily due to the ease of integration with several interface technologies. This baseline unit is very well suited for a variety of applications and is not limited to UAV and target programs.
For more information about how the model 863 rotary actuator can be tailored to fit your specific application, contact our applications engineers.
Features
- Non-jamming mechanical stops
- 4 stage spur gear train assembly
- Corrosion protected finish output shaft, 1/2 inch
SAE spline, consult factory for custom shafts - Brushless 4 pole PMDC motor
- High torque capacity in small volume
- Single film position transducer
- Digital telemetry feedback
- Electronic stops limit input command
- Signal interface is digital RS-485 electrical protocol
- Consult factory for other signal interfaces
- Thermal management option available for high altitude application
- Water immersion to 4 meters
Benefits
- Robust structural design
- Mechanical stops
- Low weight to power performance
- Customization available
- Inventory available
| Model 863 Specifications | |
|---|---|
| Operating Range | 22 - 32 VDC |
| Typical Voltage | 28 VDC |
| No Load Current | 60 mA |
| Stall Torque | 320 lbin |
| Continuous Holding Torque | 150 lbin |
| No Load Speed | 180° / sec |
| Unpowered Backdrive Torque | Less than 60 ozin |
| Power Point | 210 lbin @ 120° / sec |
| Mechanical Travel(s) | ±51.5, ±1.5° |
| Mechanical Backlash | Less than 22 arcmin with 7 lbin reversing torque |
| Electrical Travel(s) | ±45, ±0.25° |
| Stall Current | 3.1 amps |
| Frequency Response | Greater than 10 Hz |
| Electromechanical Stiffness | 150 lbin / ° |
| Command Response Latency | 13 msec |
| Loss of Communication | Return to null position |
| Weight | 1.80 lbs |
| Operating Temp | -40°C to +70°C |
| Storage Temp | -54°C to +85°C |
| Altitude / Temp | 0 ft to 65,000 ft MSL / -40°C to 60°C |
| Vibration | 20 - 2000 Hz, 11.5 g’s rms, random |
| Operational Shock | 20 G’s |
| Water Immersion | 4 meters for 3 hours |
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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