STEPPERONLINE Nema 17 Stepper Motor Bipolar 1.5A 42Ncm 42x42x38mm 1.8deg 4 Wires with 1m Cable and Connector (1 Pack)

I got two of these stepper motors for upgrading my Prusa MK3.9S to a MK4S, replacing the X and Y axis motors with the 0.9 degree motors. These motors work great and perform well. However, I had to manually re-wire the included cable in order for it to work. The wiring information in the included data sheet does not seem to match the wiring indicated in the MK4S electrical schematic. Despite just some re-wiring, I'm still giving these 5 stars. Way better value than ordering from Prusa for identical performance. They change the noise profile of the printer, but I do not have a stock MK4S to compare, so I won't provide any opinion on the noise.

Nice steppers to upgrade for a printer. Just tested these. Good torque. The 0.9 hold their steps at high accelerations. Needed rewiring to work with my board as others have stated. Comes with diagram so no problem.

The media could not be loaded. These motors work perfectly in my diy CNC, I had to switch some wires due to the way my control board worked. They where able to move the components around but I am not sure it would be able to do deep passes, but that was expected. The motors did run a little hot after a while and sometimes presented high pitched noices.

Really nice looking steppers, all movement free and buttery smooth, packaged very nicely, the card with wiring diagram and picture that shows where the positive and negative poles are in Avery convient nice touch to the package. Big deal if wires dont work for YOUR application. News flash people, they can't make wire harnesses for every single application out there that would be ignorant to think that. So they send the most likely wire harness that works with most. If you cant simply rearrange a 4 lead jst wire connector you shouldn't be messing with stepper motors in the first place. Get a grip and simply reconnect 2 measley freaking wires and don't get all bent because it doesn't work for YOUR use case

Cable isn't wired properly for the CNC shields and most stepper driver outputs, but that was a quick fix once I figured out what the issue was. Unfortunately, it took me two and a half days of debugging and pulling my hair out to figure out it was the wiring order and not something else.

I've been using these steppers for over 2 years and they perform exactly as one would expect. I jumped from a system using a 1.8° stepper and the positioning error effectively decrease to half. I use these with a DM542T driver and they work like a clock, with no missing steps.Read the datasheet and you'll be fine with the wiring. It's generally a good practice to not trust color codes you may consider conventional, as they often are not so.

First I was excited about this 0.9 degree stepper motor but once it arrived and tried to make it work I got disappointed. Wiring connections are toooo small and apparently it is aluminum wiring. I made a simple test (step high = 1.25ms and step low 1.25ms, this is really slow motion) using A4988 driver which for faster test is the one I usually use (I prefer DRV8711 for more complex applications) and in fact it started working moving step-by-step so I decided to lift it from the bench by taking if from the shaft in order to test torque. Stepper started loosing positioning after 3 or 4 seconds, no motion (no other load than motor itself), current was like crazy so I turned off power supply and start over. No more motion/positioning was observed. No more than 30 seconds of use and it is dead. Even over bench table, no external load, no motion was observed again. How to ask for refund of this item? Is that possible?Updated 20230716After my previous post where I got defective stepper motor I was reached out by StepperOnline Customer Service asking me how they can fix my problem.. they offered me two options: 1) refund of money or 2) product replacement. I decided option 2 since I'm very interested on testing/evaluating this 0.9 degrees stepper motor. Today I received and plan to do some testing next week. Thank you StepperOnline Customer Service. This just deserves 5 stars.

In the motor I got, the wires coming out of the motor are ordered A+, B+, A-, B- (unlike every other stepper motor in the universe). The supplied cable is designed for A+, A-, B+, B-, like every standard stepper motor driver in the universe expects. Duh. I had to pop out two wires in the driver-end of the cable and reorder them to make the motor work (use a sewing pin to lift the tab on the connector). After that, top notch performance using Trinamic 2209 drivers from Big Tree. Other reviewers have said it's a crap shoot on how the motors are wired, so just find the coil pairs using an ohm meter, then reorder the wires if necessary.