CNC Vertical Knee Mills. Our CNC vertical knee mills are built with the highest quality standards. With userfriendly controls (ACURITE, or FAGOR) makes 2 axes or 3 axes CNC milling operations easy and economical. 2Axis CNC Knee Mills. 2Axis CNC Knee Mills. X Travel: 25–32 in. Y Travel: 11– in. Z Travel: 5 in. Taper: