NEMA 23 425oz vs NEMA 23 269oz

Trying to understand the difference between the various types of number 23 steppers. Any advice from the forum is appreciated.

Option one: https://www.automationtechnologiesinc.com/products-page/nema-23/nema-23-quarter-inch-dual-shaft-with-flat/

Option two: http://www.spark-concepts.com/nema-23-stepper-motor/

Option three: https://www.automationtechnologiesinc.com/products-page/stepper-motors/kl23h286-20-8b/

Some more about what you’re trying to do would help?
I’ve been happy with working with these folks:

https://www.omc-stepperonline.com

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I’m interesting in understanding the benefits of different or upgraded steppers as well. Are you replacing one that failed or upgrading? If upgrading, why?

You might check Mikes thread here: Steppers, Drives, Oh My! Adventures with replacement electronics and drives

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The last ones you posted would work well, however you will want to run some 48v power supplies along with external steppers to take advantage of their potential.

I replaced because I wanted to see how much of a difference it made. That turned into a whole project of its own. I was initially trying to increase the rapid speed, and improve some chatter I was having. I haven’t gotten back to the project I started with yet. Bigger steppers turned into better/bigger drivers, which turned into a new controller…power supplies…a cabinet…I’ve totally gotten carried away with myself.

Holding torque is FAR larger than the stock machine, but I don’t know if it really matters.

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