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.
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Model

Collet Model

Through Capacity

Clamping Range

Draw Tube Stroke

Max. Clamp Force

Max Speed

Weight

Spindle Nose

Accuracy

CB42-NB/140 N/A SK42BZI N/A 1.625 in42 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 17,985 lbs80 kN N/A 6,000 rpm N/A 16.7 lb7.6 kg N/A 140mm N/A .0004 in0.010 mm
CB42-NB/A5 N/A SK42BZI N/A 1.625 in42 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 17,985 lbs80 kN N/A 6,000 rpm N/A 16.7 lb7.6 kg N/A A2-5 N/A .0004 in0.010 mm
CB42-NB/A6 N/A SK42BZI N/A 1.625 in42 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 17,985 lbs80 kN N/A 6,000 rpm N/A 16.7 lb7.6 kg N/A A2-6 N/A .0004 in0.010 mm
CB65-NB/A5 N/A SK65BZI N/A 2.560 in65 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 23,605 lbs105 kN N/A 6,000 rpm N/A 25.8 lb11.7 kg N/A A2-5 N/A .0004 in0.010 mm
CB65-NB/A6 N/A SK65BZI N/A 2.560 in65 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 23,605 lbs105 kN N/A 6,000 rpm N/A 27.6 lb12.5 kg N/A A2-6 N/A .0004 in0.010 mm
CB65-NB/A8 N/A SK65BZI N/A 2.560 in65 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 23,605 lbs105 kN N/A 6,000 rpm N/A 34.0 lb15.4 kg N/A A2-8 N/A .0004 in0.010 mm
CB80-NB/A6 N/A SK80BZI N/A 3.250 in82.5 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 25,853 lbs115 kN N/A 5,500 rpm N/A 39.1 lb17.7 kg N/A A2-6 N/A .0004 in0.010 mm
CB80-NB/A8 N/A SK80BZI N/A 3.250 in82.5 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 25,853 lbs115 kN N/A 5,500 rpm N/A 40.9 lb18.5 kg N/A A2-8 N/A .0004 in0.010 mm
CB100-NB/A8 N/A SK100BZI N/A 3.937 in100 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 33,721 lbs150 kN N/A 5,000 rpm N/A 47.9 lb21.8 kg N/A A2-8 N/A .0008 in0.020 mm
CB100-NB/A11 N/A SK100BZI N/A 3.937 in100 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 33,721 lbs150 kN N/A 5,000 rpm N/A 47.9 lb21.8 kg N/A A2-11 N/A .0008 in0.020 mm
CB120-NB/A11 N/A SK120BZI N/A 4.725 in120 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 35,969 lbs160 kN N/A 4,000 rpm N/A 72.6 lb33 kg N/A A2-11 N/A .001 in0.025 mm
CB140-NB-A11 N/A SK140BZI N/A 5.512 in140 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 38,218 lbs170 kN N/A 3,500 rpm N/A 89.1 lb40.5 kg N/A A2-11 N/A .001 in0.025 mm
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