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Nema 11/17 planetary gearbox stepper motors 28mm/42mm planetary gearbox 27:1 28:1 5:1
High precision planetary gear motor designed for 40/42 frame servo motors. Available in gear ratios of 5:1, 10:1, 20:1, 28:1 and 50:1, this planetary gearbox provides stable torque, compact size, and low backlash for automation, CNC machinery, and robotics.
Product Description
The planetary gear stepper motor is a high-performance solution designed for 40/42 frame servo motors.
With a compact planetary gearbox design, this reducer delivers excellent precision, high torque, and smooth operation
in industrial applications such as robotics, CNC machinery, automation systems, and packaging equipment.
Main Features
- High-precision planetary gear reducers with low backlash (<15 arcmin)
- Multiple planetary gear ratio options: 5:1, 10:1, 20:1, 28:1,50:1,75:1,100:1
- High efficiency up to 96% with low noise operation (<60 dB)
- Durable construction and long service life (>20000 hours)
- Compact design suitable for small space installations
Technical Parameters
| Item | Specification |
|---|---|
| Compatible Motor Dimensions | φ8~25 / φ30~3 / φ46-M3 |
| Gear Ratio Options | 5:1 / 10:1 / 20:1 / 50:1 |
| Nominal Output Torque (Tn) | 5–12 Nm (depending on ratio) |
| Backlash | <15 arcmin (standard) |
| Efficiency | 94%–96% |
| Noise Level | <55 dB |
| Max Input Speed | 6000 rpm |
| Protection Level | IP54 |
| Average Life Span | ≥20,000 hours |
| Working Temperature | -20°C ~ +150°C |
| Radial Load Capacity | 600 N |
| Axial Load Capacity | 100 N |
| Weight | Approx. 0.35 kg |
| Output Shaft Standard | Round / Common Flat Key GB1096-79 |
Available Gear Ratio Models
| Model | Gear Ratio | Rated Output Torque (Nm) | Backlash (arcmin) | Noise (dB) | Efficiency | Length (mm) | Application |
|---|---|---|---|---|---|---|---|
| 42FD20-PLF5 | 4:1/5:1 | 6 | <15 | <55 | 96% | 35 | Robotics, Automation |
| 42FD20-PLF10 | 7:1/10:1 | 6 | <15 | <55 | 96% | 35 | CNC Machinery, Packaging |
| 42FD20-PLF20 | 16/20/25/28:1 | 10 | <20 | <55 | 94% | 46 | Industrial Drives |
| 42FD20-PLF50 | 35/40/50/70:1 | 10 | <20 | <55 | 94% | 46 | Automation, Printing |
Applications
This planetary gearbox stepper motor is ideal for precision equipment requiring stable speed control and reliable torque transmission.
It is widely applied in:
- Automation equipment
- Robotics and handling systems
- CNC machinery
- Packing and printing machines
- Small industrial drives
Select Gear Ratio
Download Datasheet
Download the full specification sheet for detailed parameters, wiring guide, and performance curves.
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