First Build 5 x 12 Steel Frame CNC router

[JAZZCNC]

Then ball screw needs 1/10 rev to move 1mm. If no geared then 3000/max rpm/x10=30 000mm/min max speed , like Gerry says thats your max velocity in Mach3. So from above it seems then you will need 250pulses per mm , so 1mm/250pulses=0.004mm resolution.

Boyan Your forgetting the Encoders are Quadrature so that's 2500 x 4 =10,000ppr.!


Scott welcome to the reality's of BIG heavy Machines. Need to Slow down with the Ordering and rushing in. The fact you even considered 5mm pitch screws and Steppers on such large machine shows you need to do much more research.

You enter another world which becomes expensive very quickly if you go rushing in without doing home work.!!