The UNNAT POWER OPERATED HIGH SPEED CHUCKS WITH OPEN CENTRE is offered by us that is made for use in the various industries. They can be used in association with power lathes is disclosed wherein each chuck jaw has a pivotable lever extending from a bore in the back face of the jaw through a stationary pivot section of the chuck body and into a bore in the opposing face of a radially movable weight. This UNNAT POWER OPERATED HIGH SPEED CHUCKS WITH OPEN CENTRE with through-bore are ideal for high- speed machining with centrifugal compensation and less gripping force loss.