Stepper/Servo sizing

Mariss,
I am attempting to modify an EMCO Compact 5 CNC Lathe, the original motors
are probably around 75 in/oz, from what I heard they work much better with
about a 200 in/oz stepper. However I want to use the G320's with a servo,
how do I size the servo? The lathe has ball screws and somewhere around a
2:1 reduction belt drive, very slow.

What is the relationship between steppers and servos when trying to size
these things.
Please also post your answer on the list.
Thanks,
bill.




[Non-text portions of this message have been removed]