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 Draw Tube Force

Max. Clamp Force

Max Speed

Weight

Spindle Nose

Accuracy

N/A SK42BZI N/A 1.625 in42 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 35kN 7,868 lbs N/A 17,985 lbs 80kN N/A 6,000 rpm N/A 16.7 lb7.6 kg N/A 140mm N/A .0004 in0.010 mm
N/A SK42BZI N/A 1.625 in42 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 35kN 7,868 lbs N/A 17,985 lbs 80kN N/A 6,000 rpm N/A 16.7 lb7.6 kg N/A A2-5 N/A .0004 in0.010 mm
N/A SK42BZI N/A 1.625 in42 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 35kN 7,868 lbs N/A 17,985 lbs 80kN N/A 6,000 rpm N/A 16.7 lb7.6 kg N/A A2-6 N/A .0004 in0.010 mm
N/A SK65BZI N/A 2.560 in65 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 10,116 lbs 45 kN N/A 105 kN 23,605 lbs N/A 6,000 rpm N/A 25.8 lb11.7 kg N/A A2-5 N/A .0004 in0.010 mm
N/A SK65BZI N/A 2.560 in65 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 10,116 lbs 45 kN N/A 105 kN 23,605 lbs N/A 6,000 rpm N/A 27.6 lb12.5 kg N/A A2-6 N/A .0004 in0.010 mm
N/A SK65BZI N/A 2.560 in65 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 10,116 lbs 45 kN N/A 105 kN 23,605 lbs N/A 6,000 rpm N/A 34.0 lb15.4 kg N/A A2-8 N/A .0004 in0.010 mm
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 11,240 lbs 50 kN N/A 115 kN 25,853 lbs N/A 5,500 rpm N/A 39.1 lb17.7 kg N/A A2-6 N/A .0004 in0.010 mm
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 11,240 lbs 50 kN N/A 115 kN 25,853 lbs N/A 5,500 rpm N/A 40.9 lb18.5 kg N/A A2-8 N/A .0004 in0.010 mm
N/A SK100BZI N/A 3.937 in100 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 14,612 lbs 65 kN N/A 150 kN 33,721 lbs N/A 5,000 rpm N/A 47.9 lb21.8 kg N/A A2-8 N/A .0008 in0.020 mm
N/A SK100BZI N/A 3.937 in100 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 14,612 lbs 65 kN N/A 150 kN 33,721 lbs N/A 5,000 rpm N/A 47.9 lb21.8 kg N/A A2-11 N/A .0008 in0.020 mm
N/A SK120BZI N/A 4.725 in120 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 15,736 lbs 70 kN N/A 160 kN 35,969 lbs N/A 4,000 rpm N/A 72.6 lb33 kg N/A A2-11 N/A .001 in0.025 mm
N/A SK140BZI N/A 5.512 in140 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 16,860 lbs 75 kN N/A 170 kN 38,218 lbs 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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