which stepper


I found this stepper: nema 17, 84oz/in (https://www.omc-stepperonline.com/nema-17-stepper-motor/nema-17-bipolar-59ncm-84ozin-2a-42x48mm-4wires-w-1m-cable-and-connector-17hs19-2004s1.html?mfp=147-holding-torque-oz-in[83.57%2C84%2C85%2C92%2C92.07])

Is this one you can recommend ? or should I select a different one ? (maybe different oz/in setting?)





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Nema 17 76OZ/in Steppers, Part number: KL17H248-15-4A is the correct motors used in the MPCNC

Hi Mike,

Thanks for your reply. So, more holding torque is not ‘better’ ?



As Ryan has graciously explained to me, the addition of more torque isn’t necessary. Routering uses the tool to cut through the material, not the stepper motors. The stepper motors move the tool around so it can do the work. That’s all they do. More power isn’t going to be required. Does that help?

42oz/in is the minimum for a light duty build. Anything above that is fine, is there any benefit, not really. Bigger tend to be heavier so at some point it does start working against you.

Thanks! that makes sense to me.


Which stepper driver do you suggest? do you have good experience with TMC2130 or TMC2208?

I do not think you can take advantage of any advanced driver features. I keep the parts list updated with my recommendations.

KL17H248-15-4A is sold by none in continental EU, in UK there is seller asking about 50$ piece and does not deliver outside UK - Amazon sellers in US do not want to delivere to Nordic, and V1 is out of stock… Ryan delivers quickly, but even then the customs take at least an additional week and delivery company wants administrative fee for customs and so on.

I am doing my homework about suitable replacement for KL17H248-15-4A too, so the original question is quite relevant, imho.

Looking at https://www.omc-stepperonline.com/nema-17-stepper-motor/nema-17-bipolar-59ncm-84ozin-2a-42x48mm-4wires-w-1m-cable-and-connector-17hs19-2004s1.html?mfp=147-holding-torque-oz-in%5B83.57%2C84%2C85%2C92%2C92.07%5D,

They weight 390 g, and for KL17H248-15-4A I find weight data between 220 g to 380 g…

well - have to read more


Jari I have it specified on the parts pages, nema 17, 42oz/in or larger. Yes the linked ones will work. Not sure what you are unclear about, do you have a specific question?

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Thanks Ryan, actually I don’t have issues, just got my MPCNC ready and is now sourcing for parts for Lowrider - it was somewhat timeconsuming to find suitable steppers with reasonable delivery time and price - Amazon is not here yet.

Your instructions are amazing, no problem with that. Although I have to understand them too…

The above link is dead, i find this same one at this site:oyostepper.com

Inferring from the URL, I think the new link for the motor being discussed would be this https://www.omc-stepperonline.com/nema-17-bipolar-59ncm-84oz-in-2a-42x48mm-4-wires-w-1m-cable-and-connector.html

I have try this one