There’s no way of knowing from this side of the screen how much torque would be required–it’s a thing that will vary with adjustment, lubrication, temperature, phase of the moon, and probably a few other things.
It shouldn’t be hard to measure however, given a hanging scale or some test weights. Multiply the length of the lever arm (e.g. handwheel radius) by the amount of force required to move it, and you’ll have a torque figure.
I did the best I could with using indrasize application by rexroth. Looks like my Zaxis would need 4.3 Nm of effective torque just to move the slide/tool post/and X-axis attachment (X-axis is all attached to the Zaxis slide).
Yes and no. Any actuator capable of delivering enough torque could potentially do the job, but there’s a reason that people don’t tighten the screws on their eyeglasses with an impact wrench…
They exist. The one pictured above may well do the job. In an application of this type current is more the quantity of interest, as that’s where torque comes from. If one wanted to spin the motor quickly, then a higher-voltage driver may be called for.
The torque figures mentioned would appear to be within the capabilities of a QSH6018-86-28-310 motor under rated operating conditions. Check the configuration switches on your driver unit and verify that an appropriate output current setting is selected.