But your motor now has half the rating of this servo RPM right? 1.8kw servo has much more usable power in all revolutions than a standard motor. And higher momentary power.

I think you are mistaken a bit. I don't understand sth. The servo has an encoder. why you need a separate encoder for the rigid tapping? The servo drive surely has output of signals so what additional encoder? Read servo drive manual and you will see. My servos for example have encoder outputs and much more. Check manual.




It will be difficult for the bearing to fail 100%. It will make noise and so but i doubt it would fail if it has some grease in it.