Hello, I have an Emco 120p, which is a twin to your lathe..just the colors are different
I have converted it to all new modern electronics and installed new stepper motors and an AC 4hp motor for the spindle.
Being a complete newbie at cnc, I never really found out what type of ball screws are in the machine. To find the tpi, I just turned the gear and counted how many turns it took to move 1 inch.
What are the specs on the ball screws
Turns per?? How many starts
I'm also kind of undecided on what my microstepping should be with this machine. Someone once told me that these machines do not like ipm's over 20. I don't know if that true or not. Hence, I currently set at 1/2. It runs, but , I don't think it's optimum for this lathe...maybe I'm wrong.