I recently converted my Bridgeport clone (Enco) Mill to CNC. I am using DMM Servos and their DYN4 Drives. I started with a .75KW servo and when that didn't work we went to a 1.3KW (over 3000in lb ) and it is not working either.

The z axis is set up with a 18 tooth pulley on the motor and a 40 tooth pulley on the quill. I have enough power to do plastic and light aluminum, but can not even drill steel without tripping the servo.

Can anyone please let me know what they are using for a Z axis quill setup and help me diagnose my problem.

Thanks,

Rob