This double column CNC machine or vertical double column CNC machine is designed as moving cross rail double column vtl with two ram slides moving across the cross rails and the rams moving vertically are controlled by servo motors through ball screws by CNC Controller. The table is located at the centre by two heavy duty spherical roller thrust bearings and at the periphery by a hydrostatic flat guide which is lined with “Biplast” material for smooth operation on load. The loading capacity of the table is designed for job weight upto 40 tons. A two speed gear box with automatic shifting of gears provides adequate torque / power at different speed of table. An encoder fitted with “one to one” ratio with table allows thread cutting and constant cutting speed facility with one of the ram slides.