Description:
The Creality 42-40 Stepper Motor is a NEMA 17 motor designed for precision and durability. In the Ender-3 V3 KE, which is capable of speeds up to 500mm/s, the "40" (referring to the 40mm body height) indicates a larger internal rotor compared to the 42-34 motors. This extra size provides the increased torque necessary to move the print bed or gantry at high accelerations without losing steps.
This specific unit typically comes with a pre-pressed 20-tooth GT2 pulley, ensuring a "drop-in" replacement experience. It is engineered for low noise and stable heat dissipation, which is critical for the long-duration, high-speed prints the KE is known for.
Features:
High Torque Output: The 40mm body provides the magnetic strength required for high-acceleration "Klipper" based movements.
Plug-and-Play Pulley: Comes with a factory-installed 20-tooth copper or steel gear, perfectly aligned for the GT2 timing belts.
Low Noise & Vibration: Precision-balanced rotor reduces mechanical resonance, leading to smoother surface finishes on 3D prints.
Precision Stepping: A 1.8 step angle ensures accurate positioning, even at the high micro-stepping levels used by the KE’s 32-bit silent mainboard.
Industrial Build Quality: High-quality bearings rated for thousands of hours of continuous operation.
Specifications:
Part Number: 3204120132
Frame Size: NEMA 17 (42×42×40 mm)
Step Angle: 1.8∘
Rated Current: 1.0A per phase
Holding Torque: ∼0.4 N⋅m
Shaft Type: 5mm Round Shaft
Pulley Specs: GT2, 20-Teeth
Compatibility: Ender-3 V3 KE
