Space-grade stepper motor
Designed for LEO, GEO, or beyond, ASPINA’s space-grade stepper motors are low outgassing, made in Japan, competitively priced, and available with lead times of three months or less and minimum order of just one unit — ideal for satellites, spacecraft, and other space-rated systems.
- Standard specifications
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- Made in Japan
- NEMA sizes: 8, 11, 14, 17, 23
- Step angle: 1.8°/step
- 4-wire (or 8-wire redundant) bipolar connection
- Operational temp: -20°C to 90°C
- Survivability temp: -40°C to 125°C
- Low outgassing materials
- Wide torque range available for each NEMA size
- Customization options
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- Redundant windings
- Resistance per phase
- Custom shaft length, diameter, and shape
- Custom lead wire length and connectors
- Mounting interface on the rear bracket
- Gear box and position sensor integration
- Applications
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- Satellite
- Gimbal
- Solar Array Drive Assembly (SADA)
- Deployment mechanism
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Technical Data
| Model | Windings | NEMA size | Frame size | Current | Shaft diameter | Length | Resistance | Holding torque | Pull-out torque | Detent torque | Inertia | Weight |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| mm | A | mm | mm | Ω/phase | Nm | Nm | mNm | g·㎠ | kg | |||
| 20D1 | Bipolar | 8 | 20 | 0.5 | 4 | 31.0 | 9.00 | 0.020 | 0.012 | 1.00 | 1.7 | 0.04 |
| 20D2 | 0.6 | 45.0 | 5.00 | 0.032 | 0.019 | 1.80 | 3.4 | 0.08 | ||||
| 28D1 | 11 | 28 | 1.0 | 5 | 32.6 | 2.60 | 0.105 | 0.062 | 3.92 | 8 | 0.110 | |
| 28D2 | 40.5 | 3.40 | 0.136 | 0.081 | 5.90 | 12 | 0.145 | |||||
| 28D3 | 52.6 | 4.50 | 0.205 | 0.122 | 7.84 | 17 | 0.195 | |||||
| 35D4 | 14 | 35 | 1.6 | 51.5 | 2.25 | 0.453 | 0.270 | 15.70 | 41 | 0.280 | ||
| 42D0 | 17 | 42 | 1.0 | 28.1 | 3.20 | 0.176 | 0.105 | 4.90 | 21 | 0.170 | ||
| 42D1 | 30.6 | 3.60 | 0.237 | 0.141 | 6.86 | 29 | 0.190 | |||||
| 42D2 | 34.7 | 3.60 | 0.343 | 0.204 | 9.81 | 44 | 0.230 | |||||
| 42D3 | 40.8 | 4.40 | 0.475 | 0.283 | 14.70 | 65 | 0.290 | |||||
| 42D4 | 1.2 | 6 | 50.5 | 4.20 | 0.724 | 0.431 | 19.60 | 87 | 0.390 | |||
| 42D5 | 59.2 | 5.00 | 0.903 | 0.537 | 22.60 | 111 | 0.490 | |||||
| 56D1 | 23 | 56 | 2.0 | 8 | 39.3 | 0.98 | 0.685 | 0.408 | 18.60 | 125 | 0.420 | |
| 56D3 | 49.0 | 1.26 | 1.140 | 0.678 | 38.20 | 225 | 0.570 | |||||
| 56D5 | 75.0 | 2.00 | 2.250 | 1.339 | 63.70 | 460 | 0.990 |
*Above specifications are under development and subject to change.
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Exhibition information
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Jul. 9, 2025
-
May 19, 2025
-
Dec. 27, 2024
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