Dead Length Collet Chucks

The company has introduced a dead length design collet chuck for servo bar loaders. Traditional dead length chucks are actuated by the drawtube moving forward, away from the machine spindle. The forward motion of the drawtube can slide the bar off the pusher causing inconsistent feed out.

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The company has introduced a dead length design collet chuck for servo bar loaders. Traditional dead length chucks are actuated by the drawtube moving forward, away from the machine spindle. The forward motion of the drawtube can slide the bar off the pusher causing inconsistent feed out. The pull-to-close design is actuated as the drawtube moves toward the machine spindle and slides the bar against the pusher. The result is consistent Z-axis positioning of the bar.

All components of NDR collet chucks are said to be hardened and precision ground for accuracy and long life. They feature parallel clamping and radial adjusting screws. The internal face seal keeps the inside of the chuck free of chip and coolant contamination while the lubricated-for-life design ensures NDR chucks require minimal maintenance, the company says.

The collet chucks are available for the company’s Quick Change collets with capacities up to 2.625" (65 mm) as well as S-style collet pads. S-pad chuck models include a vulcanized master collet with ± 0.20" (± 0.5 mm) clamping range. They are available for S-20 through S-30 collet pads.

NDR chucks operate with a CNC turning machine’s existing drawtube and hydraulic actuator. The chucks are supplied with a spindle mounting plate and a threaded drawtube connector.