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Repeatable Stepper Motion for CNC, Robotics, and Precision Control
The Stepper NEMA 17 Bipolar Motor 42 x 42 x 40 mm is a practical stepper motor from Circuitrocks for students, makers, and repair-friendly builds. It fits well in projects that need repeatable positioning, while keeping setup straightforward for testing and prototype work.
Compared with generic parts, this product stands out through details such as Bipolar motor, 40 mm, 42 x 40 mm. That makes it a solid choice for Arduino, ESP32, Raspberry Pi, robotics, motion-control, and workshop projects where matching the right part from the start saves time.
Important: Always match the electrical rating, size, and control method of this part with the rest of your setup before full-power testing.
Why you'll love it
- Bipolar motor design: useful when paired with the correct driver for controlled motion
- 40 mm: gives you a quick spec reference before choosing the right part
- 42 x 40 mm: gives you a quick spec reference before choosing the right part
- Wireless control option: handy for cable-free testing and remote interaction
- Useful for precise movement: adds useful value when choosing parts for a build
What you can build
This product is a good fit for CNC motion, camera sliders, valve control, indexing systems, and repeatable positioning projects. It works especially well in student projects, quick repairs, and prototype builds where part availability, straightforward hookup, and predictable results matter.
Starter bundles
Pair it with a suitable stepper driver, a matching power supply, a controller such as Arduino or Raspberry Pi Pico, and proper wiring for reliable motion tests.
Recommended add-ons
Helpful add-ons include drivers, couplers, lead screws, pulleys, and stable motor power supplies. You can also compare it with Stepper NEMA 17 Bipolar Motor 42 x 42 x 48 mm, Stepper NEMA 17 Bipolar Motor 42×42×34 mm.
Comparison table
| Compared Product | Best For | Key Difference | Direct Link |
|---|---|---|---|
| Stepper NEMA 17 Bipolar Motor 42 x 42 x 48 mm | repeatable positioning | 48 mm, 42 x 48 mm | View product |
| Stepper NEMA 17 Bipolar Motor 42×42×34 mm | repeatable positioning | 34 mm | View product |
| Stepper Motor 42 x 42 x 23 mm 1.8 Degree Step Angle | repeatable positioning | 23 mm, 42 x 23 mm | View product |
Technical specifications
| Product | Stepper NEMA 17 Bipolar Motor 42 x 42 x 40 mm |
|---|---|
| Brand | Circuitrocks |
| Product Type | Stepper Motor |
| Category | Electrical Motors |
| Primary SKU | 2090 |
| Key Specs | 40 mm, 42 x 40 mm, bipolar |
| Product URL | https://circuit.rocks/products/stepper-nema-17-bipolar-motor-42-x-42-x-40-mm |
Pinout & power notes
A stepper motor should be used with a proper driver, not directly from a microcontroller pin. Identify the coil pairs first and match the driver current to the motor.
What’s in the box
1 × Stepper NEMA 17 Bipolar Motor 42 x 42 x 40 mm
Frequently Asked Questions
Can this work with Arduino or similar boards?
Yes, as long as the voltage, control method, and wiring match your controller and power supply.
Should I power it directly from a controller pin?
For small signal-only modules that may be fine, but motors, pumps, solenoids, and relays should use a proper driver or external supply.
Is this good for student and prototype builds?
Yes. It fits well in testing, learning, and proof-of-concept projects when matched with the right support parts.
Can I run this without a driver?
No. A stepper motor needs a proper driver to energize the coils in the right sequence.
Manila stock. Order before 16:00 PHT, ships today via J&T or LBC. Provincial: 1–3 working days.
Schools / class POs: we accept Purchase Orders for accredited schools and universities. contact us with your PO details.
Returns: 7-day inspection window for DOA units. Email proof of issue and we ship a replacement.
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