The CB-NDR is a new patented Dead Length design collet chuck to be used with servo stop bar loaders. The NDR chuck is actuated as the draw tube is pulled into the machine spindle. The collet is coupled to the chuck body and remains stationary as the tapered seat moves forward during clamping. This feature keeps the collet in a fixed Z axis position, and since the draw tube is moving into the spindle, the bar remains positioned against the servo stop.

CB-NDR Features
  • Pull to Close Dead Length design produces no pull back and will not push the bar off the servo stop
  • Radial adjusting screws
  • Lubricated-for-life design requires minimal maintenance
  • All components hardened and precision ground for highest accuracy and long life
  • Spindle speeds up to 5,000 rpm
Unit of Measure

Collet Model


Through Capacity

N/A 3.250 in82.5 mm

Clamping Range

N/A +/- .020 in+/- 0.5 mm

Draw Tube Stroke

N/A .480 in12.2 mm

Max. Clamp Force

N/A 25,853 lbs115 kN

Max Speed

N/A 5,000 rpm


N/A 57.8 lb26.2 kg

Spindle Nose

N/A A2-8

A Dimension

N/A 4.500 in114.3 mm

B Dimension

N/A 7.700 in195.6 mm

C Dimension

N/A 9.200 in233.7 mm

D Dimension

N/A 1.105 in28.1 mm

E Dimension

N/A 6.500 in165.1 mm

F Dimension

N/A .180 in4.6 mm

Item No.

N/A 15 080 301


N/A .0004 in0.010 mm

N/A CB-NDR chucks include a spindle adapter plate and a blank draw tube connector. Threaded draw tube connectors for specific machine configurations are furnished at no additional charge if draw tube dimensions are provided with purchase order.