BJ42D15-26V10 is a NEMA 17 hybrid stepper motor manufactured by Keli Motor, commonly used as an OEM component in Creality 3D printers
The is a standard NEMA 17 hybrid stepper motor offering a balance of torque (approx. 0.4 N·m) and compact size (38mm body). With a rated current of roughly 1.5A per phase and a step angle of 1.8°, it is an ideal choice for hobbyist projects and light industrial automation tasks where precision and reliability are paramount. When integrating this motor, ensure the driver is set to limit current appropriately to prevent overheating and ensure longevity.
| Parameter | Value | |------------------------|---------------------------| | Holding torque | ~0.25–0.35 N·m | | Step angle | 1.8° (200 steps/rev) | | Accuracy | ±5% (non-cumulative) | | Detent torque | 0.015 N·m typical | | Rotor inertia | ~35 g·cm² | | Max starting frequency | ~2 kHz | | Max operating frequency| 10–20 kHz (with driver) |
However, official guidance from Creality for the Ender 3 series advises a Vref of approximately 1.06V for the 26V10 variant, which is nearly triple the calculated value above. This suggests that in many 3D printer applications, the motor is intentionally to increase torque, which correspondingly increases heat generation. Therefore, when installing this motor as a replacement, always verify the optimal Vref from your original printer’s manufacturer to balance torque and thermal performance. bj42d15 26v10 stepper motor datasheet
BJ42D15-26V10 is a 2-phase, hybrid NEMA 17 stepper motor manufactured by Hunan Keli Motor Co., Ltd. and most notably deployed as an OEM component across millions of desktop 3D printers, such as the Creality Ender 3 series . Featuring a standard , a 34mm body length, and a rated current typically tuned to 0.84A , this compact motor is engineered for high-precision, low-noise positioning tasks. Understanding its precise electrical profiles and configuration parameters is critical for anyone looking to optimize stepper driver current, tune firmware, or execute a custom DIY automation project. Core Technical Specifications
Perfect for direct-drive or Bowden setups where excess weight on the gantry must be avoided. Laser Engravers: Drives the X and Y axes smoothly.
Irun=0.84A×0.80=0.672A (RMS)cap I sub run end-sub equals 0.84 A cross 0.80 equals 0.672 A (RMS) BJ42D15-26V10 is a NEMA 17 hybrid stepper motor
The is a NEMA 17 hybrid stepper motor manufactured by Keli Motor Group . It is widely used as a stock component in Creality 3D printers, typically for the X, Y, or Z axes. Technical Specifications
What is the specific you are building?
However, I can prepare a 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. When integrating this motor, ensure the driver is
: 5mm diameter, typically with a D-shape for secure gear mounting. Practical Applications This motor is a standard "workhorse" for the following:
Based on its design as a "42-34" series motor, the following technical profile applies: Step Angle : 1.8° (200 steps per revolution). Rated Current : 0.84A per phase. Phase Resistance Holding Torque : 0.4 N.m (approx. 2.86 kg.cm). Nominal Voltage
These technical specs are typical for the BJ42D15-26V10 motor used in popular 3D printing applications. Specification Rated Voltage Variable (Typically driven at 24V in modern printers) Rated Current per phase (Check specific driver settings) Phase Resistance Phase Inductance Holding Torque Insulation Class 130∘C130 raised to the composed with power C Shaft Diameter (With D-cut or Round options) Wiring 4-Wire Bipolar Key Performance Notes: High Precision: The 1.8∘1.8 raised to the composed with power
: This is usually given in Amps per phase. For example, if it's 1A/phase, you would need to ensure your driver can supply this current.