Power Chucks for CNC machines, these chucks are used for machining work pieces that can be clammped with more grip & rigidity.Power Chucks are used on CNC Machines to hold the component with more Grip & rigidity.They are Opearted by Rotary Cylinders.Power Chucks comes in 2, 3 & 4 Jaws. Open center / Close Center. Now a days people are using these Power Chucks on Manual Machines also.3 components are required rto operate Power Chucks.Rotary Cylinder (Hollow / Close Bore)Power Chuck (Hollow / Close Bore)Hydraulic Power Pack