I have a 5 x 10 cnc router with 2 z's the log axis is rack and all the rest is ball screw. Everything is 2 turns per inch of travel. I want to be at 1000" per min range when done. This is what the machine started at when new. It has Dc servo motors on it now. 16amp Cont. at 180Volt 75 Amp max, 4500 rpm is on the tag. I want to run it with step and direction. new ac motors and drives is my wish. The budget is about $5000 max . so far granite divice drives look like my only option for not starting over. The servos from salecnc.com look great, but 1000watt looks like the largest nema 42. Any larger than the nema 42, will require a bunch of clearance modification. Looks like the salecns motors and drives may be the best bang for the Buck. Any advice is great! We are cutting 3/4" material for comercial cabinet production. Aka.andyworks at gmail com Thanks!!!