We are offering power operated chucks without through bore can be used as a replacement for manual chucks on a conventional lathe to increase the productivity. these can be actuated by hydraulic, pneumatic or electro- mechanical actuators. the actuating unit imparts a linear motion of the wedge is transformed to radial movement of base jaws. This transformation provides a mechanical advantage of 1:4. This ensures a minimum of 1:2 mechanical advantage after providing for internal losses, self locking effect and losses in gripping power at high speed.