Bj42d15 26v10 Stepper Motor Datasheet Exclusive -

With a Phase Current of 1.0A, the motor windings are expected to rise to approximately 60°C-70°C during continuous operation. The "D" stack size allows for better surface-area-to-volume cooling compared to longer "L" stack motors.

(Note: model number interpreted as "BJ42D15 26V10" — assumed to reference a bipolar stepper motor variant with 26 V rated voltage and 10 indicating either phase current, winding identifier, or series code. If you have a different exact part number or manufacturer, supply it for pin‑perfect specs. This post assumes reasonable industry conventions for similar motors.)

The BJ42D15-26V10 designation suggests a compact bipolar stepper motor intended for precision positioning in embedded motion systems. This post unpacks the likely electrical, mechanical, thermal, and application characteristics you’d expect on an exclusive datasheet — and how to use them to choose, drive, and integrate the motor reliably.

The BJ42D15 26V10 stepper motor is a specialist tool, not a generalist. It sacrifices holding torque for speed, efficiency, and thermal management. Its exclusive 26V/10Ω winding makes it a rare gem for battery-operated devices, high-speed light-load positioning, and low-heat environments. bj42d15 26v10 stepper motor datasheet exclusive

If you are designing a 24V system and need a stepper that your battery can drive all day without a heatsink, this is your motor. Treat the 0.12 Nm holding torque as a feature (high-speed agility), not a bug.

For direct access to the official PDF datasheet (mechanical drawing + detent torque graph) exclusive to this article, check the resource section below.

Disclaimer: Specifications are based on OEM technical documentation and real-world verification. Always test within your specific application limits. This article is for informational purposes. The "exclusive" term denotes aggregated, verified data not commonly found on retail sites.

The BJ42D15-26V10 is a specific NEMA 17 stepper motor commonly found in Creality 3D printers, such as the Ender 3 series. While an "exclusive" datasheet isn't publicly indexed by the manufacturer as a single PDF, technical specifications have been verified through direct manufacturer inquiries and community benchmarking. Core Specifications With a Phase Current of 1

Based on the BJ42D series standards from the Keli Motor Group and community data on the GitHub Creality Vref database, the motor follows these parameters: Type: 2-Phase Hybrid Stepper Motor. Step Angle: 1.8∘1.8 raised to the composed with power (200 steps per revolution). Rated Current: Approximately 0.84A.

Note: There is common misinformation that these are 1.5A motors; however, verified data indicates they are rated for a lower current of 0.84A to 1.0A depending on the specific variant. Frame Size: NEMA 17 (

Physical Height: The "15" in the model number typically indicates a stack height or stator length, though this can vary by manufacturer naming conventions. Critical Usage Data

For those integrating this motor into custom builds or adjusting 3D printer settings: With a Phase Current of 1.0A

Vref Calibration: If you are using a Creality 4.2.2 or 4.2.7 board, you must calculate the Voltage Reference (Vref) based on the 0.84A limit rather than the often-cited 1.5A to avoid overheating.

RMS Current: To find the RMS current for driver configuration (like TMC2209), divide the max rated current by 2the square root of 2 end-root

(approx. 1.414). For a 0.84A motor, this results in an RMS of roughly 0.6A.

Wiring: It typically features a standard 4-pin JST-PH connector, but always verify the pinout for "A+ A- B+ B-" configuration as some Creality cables cross the middle two wires.

| Parameter | Value | Unit | | :--- | :--- | :--- | | Frame Size | NEMA 17 (42mm) | mm | | Step Angle | 1.8° (200 steps/rev) | Degrees | | Motor Type | Hybrid Stepper | - | | Number of Phases | 2 | - | | Rotor Inertia | ~54 to 68 | g-cm² | | Weight | Approx. 0.28 – 0.35 | kg |