Quote Originally Posted by Hulksmash View Post
also would the 50Vdc make a massive difference compared to a 2 phase with 70-80Vdc driver
Yes it will mostly make a difference to the speed but not by a massive amount, roughly 300rpm, these will give 1200rpm and the others will be 1500rpm.
They are not exactly like a standard stepper system and the encoders come into play so can restrict the speeds.

If I wanted to have excess power and plenty of speed along with AC drives then I'd fit these and sacrifice the smoothness 3phase offers as they are 2 phase.
Nothing gets close to these for power in the Nema 24 range. Again I've fitted plenty.

https://www.aliexpress.com/item/3279...16523421DXQOr7

The wiring is easy enough just shout if you need help.