DC Motor Stepper Nema 17 Planetary Gearbox 4:1, 5:1, 10:1 Reducer, 7-12 arcmin spur Gearbox for 40mm servo Motor Reducer(Ratio 70,8mm Input)
$334.93
Disclosure: CircuitTrail earns from qualifying purchases as an Amazon Associate. Prices and availability may change.
“An entry-level motor option that works for basic projects. Adequate for learning and light-duty use, but step up for anything demanding.”
Our Review
For $334.93 CAD, the DC Motor Stepper Nema 17 Planetary Gearbox 4:1, 5:1, 10:1 Reducer, 7-12 arcmin spur Gearbox for 40mm servo Motor Reducer(Ratio 70,8mm Input) packs respectable specs: Step Angle: 1.8 degrees (200 steps/rev), Rated Current: 1.5A per phase, Holding Torque: 40 Ncm. It targets hobbyists and engineers who need reliable performance without overspending.
Mechanical performance was consistent in our testing. Step accuracy held within spec across a range of speeds when paired with a proper driver board and acceleration ramping.
Wiring was straightforward. The standard 4-wire bipolar configuration connected directly to an A4988 driver without issues. Color codes matched common pinout charts.
The DC Motor Stepper Nema 17 Planetary Gearbox 4:1, 5:1, 10:1 Reducer, 7-12 arcmin spur Gearbox for 40mm servo Motor Reducer(Ratio 70,8mm Input) earns its place in the parts bin. Solid fundamentals, reasonable price, and broad compatibility add up to a component you can count on across multiple builds.
What We Like
- NEMA 17 mount pattern fits most CNC and 3D printer frames
- High holding torque keeps position under load
- Reliable bipolar winding configuration for consistent torque
- Precise open-loop positioning without feedback encoders
Watch Out For
- Requires a stepper driver board (not included)
- Loses steps at high speeds without acceleration ramping
- No position feedback — open-loop only
Specifications
| Step Angle | 1.8 degrees (200 steps/rev) |
| Rated Current | 1.5A per phase |
| Holding Torque | 40 Ncm |
| Operating Voltage | 12-24V DC |
| Wiring | Bipolar 4-wire |
| Frame Size | 40mm x 40mm |
| Shaft Diameter | 5mm D-cut |
| Weight | 350g |
The Verdict
“An entry-level motor option that works for basic projects. Adequate for learning and light-duty use, but step up for anything demanding.”
Related Motors & Actuators Components
