High Gear Ratio M8 Rotary Incremental Actuator
The Moog High Torque M8 rotary incremental actuator is a compact, closely integrated design made up of two key elements: a motor and a multi-stage speed reducer. The motor is a small angle permanent magnet stepper with relatively high holding torque. The multi-stage speed reducer offers a large reduction ratio (6400:1), low weight, and high torsional stiffness. Co-axial nesting of the motor and transmission drive elements gives the unit low profile geometry. The actuator can be made available in two and three phase motors with optional features such as potentiometer/resolver output position feedback. All the electrical elements such as motors and position sensors can be redundant with little or no change in actuator envelope.
Key Features:
- Very compact coaxial design
- Incorporates multi-stage gear system providing up to 6400:1 reduction
- Low weight
- Low backlash
- High torsional stiffness
Specifications
| Description | Units | Basis | Data |
Output Step Angle |
Degrees | Standard | 0.0030 |
| Steps Revolution | Steps | Standard | 122,880 |
| Harmonic Drive Ratio | - | Standard | 5,120:1 |
| Motor Step Angle | Degrees | Standard | 15 |
| Max. Output Step Rate | Step/sec (Deg/sec) | Maximum | 690 (1.92) |
| Torsional Stiffness | Lb-in/rad | Standard | 3,440 |
| Shaft Load Capability Axial | lbf | Maximum | 170 |
| Transverse | lbf | Maximum | 240 |
| Moment | Lb-in | Maximum | 100 |
| Output Torque | Lb-in | Maximum | 360 |
| Unpowered Holding Torque | Lb-in | Maximum | 160 |
| Body Diameter | Inch | Standard | 1.400 |
| Body Length | Inch | Standard | 4.25 |
| Power | Watts | Maximum | 10 |
| Through-hole Capability | Inch | Maximum | 0.120 |
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