Rob your buying when you don't know what your buying and this is sure fire way to waste money. The fact your asking about Voltage shows you haven't done much research and don't understand how Voltage and motor relate to each other which is very crucial relationship for performance. So how can you buy these items when you don't know what you need.?

Can I suggest you slow down and hang fire on the buying until your know exactly what you need. Fred is great to deal with for rails and ballscrews but there are better cheaper places for drives and spindle etc.

Believe I gave you my Email and phone number so time ago so give me ring if your not sure. If not the ask and I'll give it you.

If you buy blind you will regret it. DONT TRUST suppliers to give you the best components or components which best suit your machine. They will always give you what's best for them first ie: In stock or Old stock.!!