I'm using a CPM-SDSK-2321S-RLN servo on all the axes of my Benchtop PRO 24x24. Works great for X and Y, but I'm having intermittent issues with my Z axis currently.
The z motor randomly gets RMS torque exceptions, and when looking at the Scope feature in the MSP software, it appears to be struggling to hold the weight of the spindle (2.2kw plug n play spindle from AVID) against gravity. I'm still trying to figure out if that is because this particular motor is undersized for the application, or if I just have it incorrectly tuned.
Regardless, I think any of those motors you listed will work fine. Z axis is probably the only one that need extra torque compared to the X and Y motors.
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