Stepper Motor Nema 17 Geared with Gear Ratio 40:1 Square Worm Geabox 2.1Nm 1.68A
$192.77
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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 Stepper Motor Nema 17 Geared with Gear Ratio 40:1 Square Worm Geabox 2.1Nm 1.68A 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: 1.68A, Holding Torque: 40 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.
The Stepper Motor Nema 17 Geared with Gear Ratio 40:1 Square Worm Geabox 2.1Nm 1.68A 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
- Affordable replacement for 3D printer and CNC upgrades
- 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
- Draws full rated current even when stationary (gets warm)
- Requires a stepper driver board (not included)
- Loses steps at high speeds without acceleration ramping
Specifications
| Step Angle | 1.8 degrees (200 steps/rev) |
| Rated Current | 1.68A |
| Holding Torque | 40 Ncm |
| Operating Voltage | 24V DC |
| Wiring | Bipolar 4-wire |
| Frame Size | 42mm x 42mm (NEMA 17) |
| Gear Ratio | 40:1 |
| 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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