LDO

LDO NEMA 17 motor power LDO-42STH40-1684MAC AKA LDO-42STH38-1684MAC

LDO NEMA 17 motor power LDO-42STH40-1684MAC AKA LDO-42STH38-1684MAC

Regular price $ 16.95 USD
Regular price $ 21.00 USD Sale price $ 16.95 USD
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7 reviews
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The LDO-42STH40-1684MAC and LDO-42STH38-1684MAC are the same motors for reference so your number might be one or the other.

  • NEMA 17.
  • 0.9° Step Angle.
  • 400 Steps Per Revolution.
  • 1.68A Phase.
  • 36N.cm Holding Torque.
  • 40mm Body.
  • 22mm Output Shaft (5mm diameter)

Full spec sheet and drawing

Customer Reviews
4.3 Based on 7 Reviews
5 ★
71% 
5
4 ★
14% 
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TL
07/07/2022
Timmothy L.
United States

Great Quality!

It's a little hard to review a stepper motor, but I will say there's definitely an increase in my printing quality and overall movements. I don't have precision measuring equipment to verify the air gap between stator and rotor, the cups but from what I can measure (shaft dimensions, impedance, current rating, etc) I can say that they are all within spec and the build quality of the casing is nicely machined. Would definitely buy again.

F
09/27/2021
foureight84
United States United States

Good motors, a bit louder than I expected but nothing annoying

I bought these to upgrade from my Stepperonline 1.8 degree motors for my Anycubic Mega Zero on the x and y-axis. They are a bit louder (and a lot louder when printing gyroid infills) but not as bad as the stock motors that came with the printer. The main reason for buying these is to see if I can get rid of the VFA that were present on prints as present with the stock and StepperOnline motors. They DO WORK! There are still artifacts but nothing like the ripples with the previous motors. I believe that these artifacts may be caused by other factors like the extruder gears. These motors are well worth the upgrade at the current price point.

T
06/29/2021
Tim
United States United States

Terrible Vibration

With the motors wired properly, and the settings configured to proper settings, these motors vibrate a ton compared to similar e3d and moons motors. so much so that it resonates through the printer frame. Maybe i somehow got 3 bad ones, but not going to be buying again

E
04/06/2021
Evan
United States United States

Quiet! Even without stealth mode!

These steppers have been dead quite when connected to my SKR mini v2.0 both when holding and moving even without stealth mode enabled. I find my Steppermotor Online 17HM15-0904S to be very noisy by comparison, which I will be replacing with this LDO motor

C
04/01/2021
Chris
United States United States

Good motor, a bit loud

Tried these out on my Ender 3 with SKR 1.4T mainboard. They helped eliminate vertical fine artifacts in the walls and had no problems driving the axes. The only problem is that they were significantly louder than the stock steppers even with some experimentation in the chopper timing. Because the Ender 3 is in my office, I ended up going back to the stock steppers for now but will find another use for these LDOs since they are otherwise good motors.