Hi,
I was going to convert my 1340 Lathe to a two axis cnc.
This will be my first cnc conversion and will use Mach 3.
Question #1:
I was going to install servos and was going to direct drive the X and Y axis.
Is there an advantage if I direct drive the servos to the ball screw or if I use some kind of pulley/belt reduction? (Please explain).
The reason I am asking this question is, I was going to buy servos from Kellings and was really going to direct drive the servos. Kellings responded to me on email me a link for nema23 servos.
I emailed back and asked them if the nema23 are strong enough to drive a 13 X 40 lathe.
They responded and asked me what kind of gear or pulley reduction I plan to use.
I emailed back and told them that I was going to direct drive but if they have any suggestion about any gear or pulley reduction, I will consider it.

I never heard back from them. I am ready to buy but I guess they don't want to help customer and sell their products!

Question #2:
What size servos will I use for a 13 X 40 Lathe?
Is a nema 34, 1100 oz-in peak servo too strong or just enough for this size lathe?

Thanks in advance for your help!