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NEMA17 Stepper Motor LKD42HM40-2004-01F is a 40 mm bipolar stepper motor with a 0.9° step angle for compatible 3D printer motion systems, feeder assemblies, light-duty automation, and custom electronics projects.
$21.95
The NEMA17 stepper motor LKD42HM40-2004-01F is a bipolar motion motor for compatible 3D printer motion systems, light-duty automation, positioning mechanisms, feeder assemblies, and custom electronics projects. With a 40 mm body length, 0.9° step angle, 2.0A rated current per phase, and 3.5 kgf·cm holding torque, this motor is useful where controlled rotational movement and finer step resolution are required.
This NEMA17 stepper motor is designed for applications that require repeatable rotational movement in a standard 42 × 42 mm frame size. It can be used in compatible printer motion systems, feeder mechanisms, linear motion assemblies, small automation projects, positioning fixtures, and equipment repairs where the electrical and mechanical specifications match the design.
The listed 0.9° step angle provides finer native step resolution than a typical 1.8° motor. This can be useful in compatible systems where smoother motion, finer positioning, or specific firmware and driver settings are required. Always confirm that your controller, driver, and firmware are configured correctly for a 0.9° stepper motor.
The motor features a 42 × 42 mm frame size, 40 mm body length, 5 mm shaft diameter, 24 mm shaft length, and 15 mm D-cut length. The 5 mm D-cut shaft helps provide a secure interface with compatible pulleys, gears, couplers, or drive components.
This bipolar stepper motor is rated at 2.0A per phase with 1.4 ohms phase resistance and 3.0mH ±20% inductance at 1KHz. Confirm stepper driver compatibility, current settings, wiring order, cooling, and firmware configuration before installation.
The current product page lists a 1 m cable with JST-XH 4-pin male connector included. The listed wire colours are A+ black, A- green, B+ red, and B- blue. Confirm pinout and coil pairs before connecting to a stepper driver or control board.
Browse more stepper motors, electronics parts, and 3D printer parts for compatible motion systems, repairs, and custom build projects.
For general background on how stepper motors work, see this overview of stepper motors and their control.
Each NEMA17 stepper motor is sold individually and includes the listed 1 m JST-XH 4-pin cable.
Full Datasheet:ldo-42sth40-2004mah
| Product Type | Bipolar stepper motor |
|---|---|
| Model / Part Number | LKD42HM40-2004-01F |
| Frame Size | NEMA17 / 42 × 42 mm |
| Body Length | 40 mm |
| Step Angle | 0.9° |
| Holding Torque | 3.5 kgf·cm |
| Rated Current / Phase | 2.0A |
| Phase Resistance | 1.4 ohms |
| Inductance | 3.0mH ±20% at 1KHz |
| Shaft Diameter | 5 mm |
| Shaft Length | 24 mm |
| D-Cut Length | 15 mm |
| Number of Leads | 4 |
| Connector | JST-XH 4-pin male connector |
| Included Cable | 1 m cable with JST-XH 4-pin male connector |
| Connection Colours | A+ Black, A- Green, B+ Red, B- Blue |
| Weight | 0.28 kg |
| Common Applications | Compatible 3D printer motion systems, feeder assemblies, linear motion systems, light-duty automation, repairs, and custom electronics projects |
| Quantity | Sold individually |
| SKU | DB-0663-7435 |
Verification note: Manufacturer name, datasheet source, connector pinout compatibility, motor wire order, insulation class, operating temperature, and exact replacement equivalency should be verified before adding additional claims.
At dnb3D, we don’t just ship boxes—we manufacture solutions. Operating our Industry 4.0 micro-factory in Marathon, Ontario, means your order is handled by the same people who design and test these components.
Ready to Ship (3D Printer Parts & Hardware): Finished, inspected, and on the shelf. Dispatched within 1 to 2 business days.
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