10pcs Nema 17 Stepper Stepping Motor Drive Control 2 Phase 1.8 Degree 0.9A 0.4N.M 42mm with Lead Cable 3D Printer/CNC Accessory Replacement

I was having the hardest time with one of my ender3 machines and under extrusion. I had tried adjusting esteps, swapping nozzles, swapping drive gears, and drive gear Assembly, and even bowden tubing.. I cheked voltages to the steppers.. but it still was not working properly. As a hail marry with my fingers crossed I put this stepper in as a replacement and everything works perfectly.

One of my stock Creality Ender 3 servos had pretty gnarly grinding noises that bugged me, so I went shopping for replacements. These weren't exactly drop-in replacements, but I was able to get them installed without much trouble. These servos are taller than the stock Ender 3 ones, which for the Z servo meant using some T-nuts on the rails to mount it rather than the nice tapped holes that came with the printer. They are indeed quieter than the stock servos. No noticeable difference in the quality of my prints versus the stock servos. Very viable replacements.

Arrived on time, in good shape. I used this to replace a dead SWX1 extruder. Dropped in with no mechanical modifications, using the existing wiring. I did an E step calibration and was back in business.

Becareful before you replace any motors with this one. I after 2 hours of struggling with my mechanic friend trying to install these into my 3d printer we found out the rotation of the motor was the reverse direction from my original motors. We were able to get them to work and they are amazing and totally worth the money

I've had a set of these running on the Z and X axis of my Prusa MK2.5 for at least a year now. No issues whatsoever, and I've purchased 5 more for my upcoming printer build.