In the CB-NB series collet chucks, the collet is coupled directly to the draw tube connector. As the draw tube is actuated, the collet is drawn into the tapered seat of the chuck body, efficiently translating draw tube force into maximum clamping force.

CB-NB Features
  • Pull Back design maximizes the efficiency of the clamping system by concentrating all forces in the direction of the spindle for highest accuracy and greatest overall rigidity
  • Low profile OD and short overall length provides increased tool clearance and maximum utilization of the machine's Z axis
  • 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 6,000 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 0.16 in4 mm

Max. Clamp Force

N/A 25,853 lbs115 kN

Max Speed

N/A 5,500 rpm


N/A 40.9 lb18.5 kg

Spindle Nose

N/A A2-8

A Dimension

N/A 4.5 in114.3 mm

B Dimension

N/A 5.875 in149.2 mm

C Dimension

N/A 7.7 in195.6 mm

D Dimension

N/A 9.2 in233.7 mm

E Dimension

N/A 1.105 in28.1 mm

F Dimension

N/A 3.21 in81.5 mm

G Dimension

N/A 5.21 in132.3 mm

H Dimension

N/A 0.18 in4.6 mm

Item No.

N/A 15 080 101


N/A .0004 in0.010 mm

Standard Equipment

N/A CB-NB collet 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 your purchase order.