This is perhaps the most critical section for engineers and repair technicians. The BJ42D15-26V10 is a motor. The standard wiring configuration, compatible with almost all 3D printer boards (like Creality's Silent Motherboard v4.2.x), is as follows:
The 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
BJ42D15-26V10 Stepper Motor Datasheet: The Ultimate Technical Blueprint bj42d15 26v10 stepper motor datasheet exclusive
| Parameter | Value | | :--- | :--- | | | 42mm x 42mm | | Body Length | 15mm (Excluding shaft) | | Shaft Diameter | 5mm (Φ5 - Standard) | | Shaft Length | 24mm (Flat cut standard) | | Weight | 140 grams (4.9 oz) | | Number of Leads | 4 | | Lead Length | 300mm (AWG26) | | Rotor Inertia | 12 g·cm² |
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. This is perhaps the most critical section for
(for DRV8825 or A4988) or consult the TMC driver documentation. A typical setting is 0.8A - 1.0A ( Vrefcap V sub ref end-sub around 1.0 - 1.2V) to avoid overheating. 6. Summary and Conclusion
(often referenced interchangeably with similar "42-26" models) include: Step Angle: 1.8 raised to the composed with power (standard 200 steps per full rotation). Rated Current: 0.84 Amps per phase. Motor Frame Size: NEMA 17 (approximately 42mm x 42mm). Body Length: 26mm (indicated by the "-26" in the part numbering). Phase Count: 2-Phase bipolar. Key Performance Insights Current Limit Warning: While an "exclusive" datasheet isn't publicly indexed by
, this usually translates to a specific Vref setting based on the driver type used (e.g., TMC2208 or A4988). Compatibility: This motor is standard for X, Y, and Z axes on several Ender and CR series printers due to its balance of torque and compact size. Identification and Variants The BJ42 series follows a specific naming convention: Refers to the internal coil and winding configuration.
Precision mounting is critical for minimizing vibration and ensuring axial alignment in belt-driven or lead-screw systems. 42.3mm x 42.3mm Body Length: 40mm
Typically a "D" shaft to prevent pulley or gear slippage.
Unlike generic 12V steppers, the 26V rating of the BJ42D15 means it is optimized for 24V industrial bus systems (allowing for a 2V overhead margin). This motor is designed to run hot and fast.