Stepper motor help.

[Kammo1]

I have tried to read this but to be totally honest I am more confused than anything else. Just wanted an expert's advice as to which one they would use to match with what I have, anybody care to help ?

[irving2008]

Plugging your numbers into the spreadsheet and trying all NEMA17 motor types on Gary's site shows that the 1684 motors are do-able, but the others are marginal. This assumes you run them using rated current and 24v supply and the efficiency of the screw is around 15% (allowing for your antibacklash nuts on threaded rod) . You don't say what driver you have, but 24ipm should easily be possible, higher may be.