Thread: Thor, or should that be Zeus?
Just use a Chinese Spindle, I have the VFD already.
Get a BT30 Spindle, belt driven and use the same Chinese spindle to power it. This allows me some gearing options too.
Use the same BT30 Spindle and go AC Servo. Anything over 1.5KW needs to be 3 Phase and is fairly expensive. £1500 probably for a 4KW AC Servo and Drive.