Hi to all

I try to design a 5 axis CNC machine. Feed rate in X,Y,Z is 12000 mm/min. I want ask you for 4 and 5 axis motors?
which motor do you suggest ?

FHA-C Series : Rotary Actuator : Product Information : Harmonic Drive Systems

or

AC Servo Motor (600W) (ACH-11060D) - China Ac Servo Motor,Servo Motor,Low-Inertia Servo Motors in Electric Motor

when i must use a Gear box? does i need gear box?
Please help me by your experience.

please help me also for have a formula between Diameter and pitch of ballscrew(for design)?


Thank you