Bj42d15 26v10 Stepper — Motor Datasheet !link!
Typically, the KELI BJ42D series offers performance curves similar to other NEMA 17 motors. A typical curve shows torque decreasing as speed (PPS) increases. For example, a comparable model, BJ425D5-TW01, operates at 24V with a current of 0.4A to 1.8A, generating torque that declines as speed increases. Therefore, the actual torque produced by the BJ42D15-26V10 will depend on the chosen driver and operating voltage.
The text cut off. The rest of the page was a single line of motor control code:
This careful cross-check is the most reliable method to ensure firmware compatibility and optimal performance.
: This indicates the angle through which the motor shaft moves for each input pulse. For a standard stepper motor, it might be 1.8 degrees (200 steps per revolution) or 0.9 degrees (400 steps per revolution), but it depends on the motor. bj42d15 26v10 stepper motor datasheet
The standard 4-wire connection for a bipolar stepper motor like this follows the A+/A- and B+/B- pairing scheme. Two windings are independent and must not be crossed. Verify your specific motor's wire color if it differs:
is manufactured by . It is a NEMA 17 bipolar stepper motor widely used for the X, Y, or Z axes in printers like the Ender 3 series. The Technical "Plot Points"
: This is the resistance of one phase of the motor, usually measured in Ohms. Typically, the KELI BJ42D series offers performance curves
You may find this motor cross-referenced as a 42-34 motor in Creality's official documentation .
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. This is normal behavior for hybrid steppers, though active cooling or heat sinks are recommended if enclosed. Driving the BJ42D17-26V10 Therefore, the actual torque produced by the BJ42D15-26V10
With a standard 1.8-degree step angle, the motor provides 200 physical steps per revolution. When paired with a microstepping driver (such as an A4988 or TMC2209) at 1/16 or 1/32 step resolution, the motor achieves exceptionally smooth motion and high positional accuracy.
| Parameter | Value | Unit | | :--- | :--- | :--- | | | 1.8° (200 steps/rev) | degrees | | Step Angle Accuracy | ±5% (full step, no load) | % | | Temperature Rise | 80°C Max (rated current, 2 phases on) | °C | | Ambient Temperature | -10°C to +50°C | °C | | Insulation Resistance | 100 MΩ Min (at 500 VDC) | MΩ | | Dielectric Strength | 500 VAC for one minute | VAC | | Radial Play | 0.08 mm Max (at 450g load) | mm | | Axial Play | 0.02 mm Max (at 450g load) | mm | | Mounting Flange | NEMA 17 / Standard 42mm | mm | | Shaft Diameter | 5mm | mm | | Weight | Approx. 0.28 kg (for 34mm length) | kg |
The story of the is a classic case of "hardware detective work" within the 3D printing community. While it is a common component in Creality machines, its official datasheet was notoriously difficult to find, leading hobbyists to crowdsource its specifications. The Origin Story The BJ42D15-26V10