Drilling head with special angular contact bearings arrangement for high level of accuracy & rigidity. Head driven by a 10HP motor with a combination of gears and timer belt and timer pulley arrangement for obtaining required speeds without torque drop.Centralized automatic lubrication to lubricate all rotating & sliding parts at pre-set regular intervals.High pressure coolant thru with rotary joint for quick chip evacuation,Centralized automatic lubrication to lubricate all rotating & sliding parts at pre-set regular intervals.