Stepper Motor Nema 17 39mm 42BYGH 1.5A 45Ncm Nema17 Stepping 4-Lead w/1m Cable & Connector
$131.79
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“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 $131.79 CAD, the Stepper Motor Nema 17 39mm 42BYGH 1.5A 45Ncm Nema17 Stepping 4-Lead w/1m Cable & Connector packs respectable specs: Step Angle: 1.8 degrees (200 steps/rev), Rated Current: 1.5A, Holding Torque: 45 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.
Overall, the Stepper Motor Nema 17 39mm 42BYGH 1.5A 45Ncm Nema17 Stepping 4-Lead w/1m Cable & Connector fills its role well. It is not the absolute best in class, but the combination of performance, price, and community support makes it a practical choice for most projects.
What We Like
- Precise open-loop positioning without feedback encoders
- NEMA 17 mount pattern fits most CNC and 3D printer frames
- High holding torque keeps position under load
- Compatible with AccelStepper and Marlin firmware
Watch Out For
- Requires a stepper driver board (not included)
- No position feedback — open-loop only
- Audible resonance at certain speed ranges
Specifications
| Step Angle | 1.8 degrees (200 steps/rev) |
| Rated Current | 1.5A |
| Holding Torque | 45 Ncm |
| Operating Voltage | 24V DC |
| Wiring | Bipolar 4-wire |
| Frame Size | 39mm x 39mm |
| 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.”
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