Bj42d15 26v10 Stepper Motor Datasheet [2024-2026]

Many beginners mistake "26V" for the supply voltage. This is a fatal error. 2.6V is the DC resistance voltage drop, not the driving voltage. In practice, you drive this motor with a chopper driver (like an A4988 or TMC2209) at 12V to 24V, while limiting the current to 1.0A.

The BJ42D15-26V10 is a versatile, compact bipolar stepper characterized by 1.8° stepping, a 26 V rating suitable for current-regulated drivers, and moderate 1.0 A phase current. It’s a practical choice where dependable, precise open-loop motion is needed—provided you pair it with a proper current-regulated microstepping driver, respect thermal limits, and attend to mechanical integration details.

If you want, I can:

The BJ42D15-26V10 is a specific NEMA 17 stepper motor variant commonly found in Creality 3D printers, such as the Ender 3 series. A key "useful feature" for users is its 0.84A rated current, which is critical for correctly setting the stepper driver's voltage reference (VREF) to prevent motor overheating or missed steps. Key Specifications

Step Angle: 1.8° (200 steps per revolution), providing standard precision for 3D printing axes.

Rated Current: 0.84 Amps per phase. Note that online discussions often mistakenly assume 1.5A; using the correct 0.84A limit is essential for longevity.

Holding Torque: Approximately 0.4 N.m (or 2.86 kg.cm), sufficient for driving X, Y, and Z axes on desktop printers.

Dimensions: A "42-34" model, meaning a 42mm x 42mm frame with a 34mm body length.

Shaft: 5mm diameter, typically with a D-shape for secure gear mounting. Practical Applications This motor is a standard "workhorse" for the following: bj42d15 26v10 stepper motor datasheet

Axis Movement: Frequently used for the X, Y, and Z axes on printers like the Ender 3 Pro and CR-10 series.

Quiet Operation: Designed for low noise, making it suitable for home or office environments.

Replacement: It is widely available as a genuine OEM replacement part for worn-out factory motors.

Are you looking to adjust the VREF for this motor on a specific 3D printer mainboard? Creality Ender 3 Stock Factory Vref · GitHub

BJ42D15-26V10 is a NEMA 17 hybrid stepper motor manufactured by Hunan Keli Motor Co., Ltd. and is commonly found in Creality 3D printers like the Ender 3 series. Core Specifications

Based on manufacturer data and community measurements for the BJ42D15 series, the primary specifications are as follows: : 2-Phase Hybrid Stepper Step Angle : 1.8° (200 steps per revolution) Rated Current : 0.84A per phase Phase Resistance : Approximately 6.0 Holding Torque : 2.86 kg·cm (0.28 N·m) Frame Size : 42 x 42 x 34 mm (NEMA 17) Shaft Diameter Operating Voltage

: Typically used with 12V or 24V systems; maximum recommended input is 24V DC Technical Overview for 3D Printing In the context of Creality machines

, this motor is frequently used for the X, Y, or Z axes. A common misconception is that these motors are rated for 1.5A; however, official communications from Keli Motor indicate a lower Wiring and Pinout Many beginners mistake "26V" for the supply voltage

The motor features a 4-wire bipolar configuration. While wire colors can vary between batches, standard Creality-style wiring often follows this order: : Pins 1 and 4 (often Red/Blue or Black/Green)

: Pins 3 and 6 (middle pins on the 6-pin connector are often empty)

To verify your specific motor's coils, you can use a multimeter to check for continuity between pairs; if you feel mechanical resistance when spinning the shaft while two wires are touched together, you have found a coil pair. VREF Adjustment If you are replacing this motor or tuning your Ender 3 printer

, setting the correct VREF is critical to prevent overheating. For a 0.84A rated motor on an A4988 driver , a VREF of approximately is typical for standard operation. for a specific stepper driver? Creality Ender 3 Stock Factory Vref · GitHub

BJ42D15-26V10 is a specific model of NEMA 17 stepper motor, widely recognized as a standard component in Creality 3D printers

like the Ender 3 series. While finding a single "official" PDF datasheet can be challenging, technical specifications can be synthesized from manufacturer data and user documentation. Funduinoshop Core Technical Specifications The following parameters are typical for the

BJ42D15-26V10 is a NEMA 17 hybrid stepper motor manufactured by Keli Motor Group

. It is widely used as a stock component in Creality 3D printers, such as the Ender 3 and CR-10 series, typically serving as the Y-axis motor Technical Specifications The BJ42D15-26V10 is a specific NEMA 17 stepper

While this specific model number is an OEM-specific variant, it belongs to the BJ42D15 series. Based on technical documentation for this series, the primary specifications are: Step Angle : 1.8° (200 steps per revolution) Rated Current : 0.84 A per phase Holding Torque : Approximately 2.86 kg·cm (0.28 N·m) Input Voltage : Maximum 24V DC Nominal Phase Voltage Phase Resistance : 5.75 Ω (±10%) Phase Inductance : 9.3 mH (±20%) Physical Dimensions Frame Size : 42 x 42 mm (NEMA 17 standard) Motor Length Shaft Diameter : 5 mm (often "D-shaped" for pulley mounting) : Approximately 215g - 220g Funduinoshop Wiring and Pinout

The motor typically features a 6-pin JST-PH connector, but only 4 pins are active for its 2-phase operation. Creality Ender 3 Stock Factory Vref · GitHub 19 Jan 2025 —

I cannot directly access or retrieve specific PDFs, proprietary datasheets, or real-time external documents, including the exact datasheet for a part number like BJ42D15 26V10 (which appears to be a hybrid stepper motor, likely from a Chinese or OEM manufacturer such as BJX Motor, Changzhou, or similar).

However, I can prepare a simulated/reference technical paper based on standard specifications for a NEMA 17 or 42 mm frame hybrid stepper motor with 26V/phase and 10 Ω/phase typical characteristics, as implied by the code.

Below is a structured technical paper you could use as a template. If you obtain the real datasheet, you can replace the assumed values.

The BJ42D15-26V10 is a bipolar stepper motor designed for precise position control in compact electromechanical systems. Typical applications include 3D printers, CNC machines, robotics, optical drives, and medical instruments.

For the standard 4-wire bipolar version of the BJ42D15-26V10, the wiring is straightforward.

Typical Wire Color Configuration:

Note: Always verify phase pairs using a multimeter to check continuity. Wires within the same phase will have low resistance (approx. 1.5Ω - 1.75Ω) between them, while wires from different phases will have infinite resistance (open circuit).

| Parameter | Value | |------------------------|---------------------------| | Temperature rise | 80°C max (rated current) | | Ambient temperature | –20°C to +50°C | | Storage temperature | –25°C to +70°C | | IP rating | IP30 (open frame) |