Bj42d15 26v10 Stepper Motor Datasheet Exclusive Fixed 〈HD〉
BJ42D15-26V10 is a high-precision NEMA 17 stepper motor frequently utilized in 3D printers, specifically as a replacement part for Creality machines like the Ender-3 S1, Ender-5 S1, and V3 series. Technical Specifications
Part 4: Application Engineering – Where to Use the BJ42D15 26V10
You should not use this motor on a CNC router or a heavy-duty mill. You should use it for: bj42d15 26v10 stepper motor datasheet exclusive
6. Mechanical Drawings (Key Dimensions)
- Motor body length (excluding shaft) : 34 mm ± 0.5 mm
- Shaft extension : 22 mm
- Rear shaft (optional encoder mount) : None (standard version)
- Mounting hole spacing : 31 mm x 31 mm (M3 thread depth: 4.5 mm max)
- Cable exit : Radial, 300 mm pigtail with Dupont connectors or bare tinned ends.
Disclaimer: This document is an engineering profile generated based on the standard naming conventions and typical specifications associated with the model code BJ42D15-26V10. For mission-critical applications, always request the official manufacturer's datasheet to confirm tolerance variances. BJ42D15-26V10 is a high-precision NEMA 17 stepper motor
Thermal Behavior
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. Motor body length (excluding shaft) : 34 mm ± 0
- Connect Red & Green to channel A of your driver.
- Connect Yellow & Blue to channel B.
- Do not interchange phases unless you intend to reverse rotation direction.
- Unipolar (center tap common) : Use all six wires. Torque is reduced to ~70% of bipolar, but driver circuitry is simpler (only 4 transistors). Not recommended for new designs.
- Bipolar series (connect center taps together and isolate): Doubles the inductance (to ~40 mH) but reduces current requirement per phase to 0.7A. Torque is maintained at low speeds but high-speed performance suffers.
- Bipolar parallel (best for this motor): Requires a 4-lead conversion. Delivers full 1.0A per phase and keeps inductance low (22 mH). Recommended driver: Trinamic TMC2209 or Allegro A4988, configured for 1.0A RMS, 26V supply.