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1103A Tianhui Building, Yeqin 1st Road, Longcheng Street, Shenzhen, Guangdong, China










This 0.9° NEMA 17 gear reducer stepper motor integrates a high precision planetary speed reducer gearbox for enhanced torque output, low backlash, and accurate positioning. Designed for automation, robotics, CNC systems, and precision motion control applications, this gearbox reducer motor offers smooth low-speed performance and stable transmission efficiency.
This high precision speed reducer gearbox motor combines a 0.9° hybrid stepper motor with a compact planetary transmission system for accurate motion control and increased output torque.
The integrated planetary gear reducers structure delivers stable low-speed operation, high transmission efficiency, and reduced mechanical backlash.
Compared with standard stepper motors, this gear reducer stepper motor provides finer positioning accuracy and smoother rotational control, making it ideal for robotics, semiconductor equipment, CNC automation, optical systems, and precision positioning platforms.
| Parameter | Specification |
|---|---|
| Motor Type | Planetary Gear Reducer Stepper Motor |
| Frame Size | NEMA 17 (42×42mm) |
| Step Angle | 0.9° ±5% |
| Phase Number | 2 |
| Phase Voltage | 3.06 VDC |
| Phase Current | 1.7 A |
| Holding Torque | 0.40 Nm |
| Phase Resistance | 1.8 Ω ±10% |
| Phase Inductance | 4.0 mH ±20% |
| Insulation Class | Class B |
| Insulation Resistance | 100MΩ Min. (500V DC) |
| Operating Temperature | -20°C to +50°C |
| Ambient Humidity | 15% to 95% |
| Motor Weight | Approx. 0.38kg |
| Recommended Driver | OK2D4020A |
| Reducer Stage | Reduction Ratio | Rated Load (Nm) | Reducer Length (mm) | Efficiency | Backlash | Noise |
|---|---|---|---|---|---|---|
| Level 1 | 3 / 4 / 5 / 10 | 8 – 10 Nm | 40 mm | 96% | <15 arcmin | <55 dB |
| Level 2 | 12 / 16 / 20 / 25 / 35 / 40 / 50 / 70 | 10 Nm | 51 mm | 94% | <20 arcmin | <55 dB |
| STEP | A+ | B+ | A− | B− |
|---|---|---|---|---|
| 1 | + | + | − | − |
| 2 | − | + | + | − |
| 3 | − | − | + | + |
| 4 | + | − | − | + |
| Wire Color | Phase | Description |
|---|---|---|
| Black | A+ | Phase A Positive |
| Green | A− | Phase A Negative |
| Red | B+ | Phase B Positive |
| Blue | B− | Phase B Negative |
Custom reduction ratios, shaft structures, encoder integration, connector types, and cable lengths are available for OEM gearbox reducer projects.
Download the full specification sheet for detailed parameters, wiring guide, and performance curves.
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