This motor is a "short" NEMA 17 (34mm length) designed to balance weight and torque. In Creality machines, it is often paired with an TMC2208/2209
BJ42D15-26V10 is a NEMA 17 hybrid stepper motor manufactured by Hunan Keli Motor Co., Ltd. specifically for 3D printers, including the Ender 3 and CR-10 series. Verified Specifications bj42d15 26v10 stepper motor datasheet verified
After cross-referencing manufacturer datasheets and community testing, here are the verified specifications for the BJ42D15-26V10. This motor is a "short" NEMA 17 (34mm
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While the motor has a low "rated voltage," it is typically used in 12V or 24V systems [17]. The stepper driver (e.g., A4988, TMC2208/2209) regulates the current to the target 0.84A regardless of the supply voltage [17]. Ltd. specifically for 3D printers