knee mill ground ball screws
Bridgeport X Y feed screw nut replacement 20 12 2024 Ball screws are required with a CNC mill While CNC control is on the servo or stepper holds the screws tight all the time In manual though the ball screws will move creep when not intended The original acme screw has more hold on the non moving axis So if you have ball screws you need to always tighten down the non moving axis