The BJ42D15-26V10 is engineered for low-noise operation and high thermal stability. Class B (130°C) Dielectric Strength: 500V AC for one minute Insulation Resistance: 100MΩ Min. (500V DC) Operating Temperature: -20°C to +50°C Application Best Practices
BJ42D15-26V10 is a NEMA 17 hybrid stepper motor manufactured by Hunan Keli Motor Co., Ltd. and is most commonly found as original equipment in Creality 3D printers
. It is widely recognized as a stock component for the X, Y, or Z axes in Creality 3D printers , such as the Ender 3 series. Technical Specifications bj42d15 26v10 stepper motor datasheet exclusive
Durable casing designed for continuous operation. 2. Technical Specifications & Datasheet Data
The 34mm variants like share the same mechanical dimensions, but differ greatly in current handling : The BJ42D15-26V10 is engineered for low-noise operation and
: While some generic 42-34 motors are rated at 1.5A, the BJ42D15 series used by Creality is specifically tuned for lower current (~0.84A) to maintain thermal stability. Holding Torque : Approximately 2.86 kg·cm (0.28 N·m). Dimensions : 42 x 42 x 34 mm (Standard NEMA 17 "42-34" frame). Shaft Diameter Input Voltage : Maximum 24V DC. Operational Features Stepper Motor Basics
The "15" variant is exclusively the 34mm motor. The "22" variant is the 40mm motor. and is most commonly found as original equipment
Because the official datasheet is often considered a proprietary document of the OEM (Keli Motor Group), the following data has been extrapolated from identical BJ42D series specifications and reverse-engineered from community testing.
Finding a genuine replacement or new stock for a "BJ42D15-26V10" can be difficult. Use this guide to source the correct part.
Based on the specifications commonly found in high-quality 42mm stepper motors used by Creality (e.g., 42-40/42-34 variants), the BJ42D15-26V10 operates under the following electrical and mechanical parameters. Electrical Characteristics ~ 3.0V - 4.8V DC (Varies by driver) Rated Current/Phase 1.0A - 1.5A (Dependent on printer) Resistance/Phase ~ 2.4 - 3.5 Ω Inductance/Phase ~ 2.8 - 4.5 mH Insulation Class Class B (130°C) Mechanical Characteristics Step Angle 1.8° ± 5% Holding Torque ~ 0.4 - 0.5 N.m (40 - 50 N.cm) Frame Size 42 × 42mm (NEMA 17) Motor Length ~ 40mm - 42mm Shaft Diameter 5mm (D-Shape) Weight ~ 250 - 300g 3. Performance Analysis: Why Choose this Motor? Exceptional Torque-to-Size Ratio