Hi guys, I have just received my Harbor Freight knee mill, entry level obviously. I like the machine, but I am looking to sell its monstrous AC motor in the back and do an upgrade. I am leaning towards buying an AC Servo (possibly 240V one) instead of that motor. Googled for quite some time but was not able to find any good comparison of different motor types for this application. All I was able to find is extremely dated and isn't true anymore.

I am looking to keep it on current NEMA14-50 socket, so high voltage isn't an issue, I have that already. what would be your suggestions for 2021?

The machine has 9 speeds, and a max RPM of 2800, but realistically max RPM is 2300 as the belt starts rubbing on a gear on that setting, not really usable. And such RPM is really limiting obviously, I would like to have the ability to mill at at least 10000 RPM, as I will be doing a CNC conversion for it shortly also. That was the whole point of buying it

Thanks in advance!