Nema 17 Stepper Motor 42hs34 with Reducer Ratio 3.7 14 51 Outer Torque Max 5nm Dc 9-20v 1.5a for 3D Printer Catcher(Ratio 14)
$80.65
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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
After integrating the Nema 17 Stepper Motor 42hs34 with Reducer Ratio 3.7 14 51 Outer Torque Max 5nm Dc 9-20v 1.5a for 3D Printer Catcher(Ratio 14) into several test builds, we found it to be a capable component for the price. Key specs include Step Angle: 1.8 degrees (200 steps/rev), Rated Current: 1.5A, Holding Torque: 26 Ncm.
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 Nema 17 Stepper Motor 42hs34 with Reducer Ratio 3.7 14 51 Outer Torque Max 5nm Dc 9-20v 1.5a for 3D Printer Catcher(Ratio 14) 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
- Smooth microstepping reduces vibration and noise
- Affordable replacement for 3D printer and CNC upgrades
- Compatible with AccelStepper and Marlin firmware
- NEMA 17 mount pattern fits most CNC and 3D printer frames
Watch Out For
- Audible resonance at certain speed ranges
- No position feedback — open-loop only
- Loses steps at high speeds without acceleration ramping
Specifications
| Step Angle | 1.8 degrees (200 steps/rev) |
| Rated Current | 1.5A |
| Holding Torque | 26 Ncm |
| Operating Voltage | 20V |
| Wiring | Bipolar 4-wire |
| Frame Size | 42mm x 42mm (NEMA 17) |
| Shaft Diameter | 8mm |
| Weight | 320g |
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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