The CB-NK series collet chuck is a Pull Back design that offers the added flexibility of being able to mount part stops inside the chuck body for easy conversion from bar to chucking work.

CB-NK 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
  • Removable stop plates and stop housings can be mounted inside the chuck body for chucking applications requiring end stops or part ejectors
  • 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

N/A SK42BZI N/A 1.420 in36 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 7,868 lbf3569.02 kgf N/A 17,985 lbf8157.76 kgf N/A 6,000 rpm N/A 16.7 lb7.6 kg N/A 140mm
N/A SK42BZI N/A 1.420 in36 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 7,868 lbf3569.02 kgf N/A 17,985 lbf8157.76 kgf N/A 6,000 rpm N/A 16.7 lb7.6 kg N/A A2-5
N/A SK42BZI N/A 1.420 in36 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 7,868 lbf3569.02 kgf N/A 17,985 lbf8157.76 kgf N/A 6,000 rpm N/A 16.7 lb7.6 kg N/A A2-6
N/A SK65BZI N/A 2.245 in57 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 10,116 lbf4588.74 kgf N/A 23,605 lbf10707.06 kgf N/A 6,000 rpm N/A 36.9 lb16.7 kg N/A A2-5
N/A SK65BZI N/A 2.245 in57 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 10,116 lbf4588.74 kgf N/A 23,605 lbf10707.06 kgf N/A 6,000 rpm N/A 40.0 lb18 kg N/A A2-6
N/A SK65BZI N/A 2.245 in57 mm N/A +/- .020 in+/- 0.5 mm N/A 0.16 in4 mm N/A 10,116 lbf4588.74 kgf N/A 23,605 lbf10707.06 kgf N/A 6,000 rpm N/A 46.5 lb21.1 kg N/A A2-8
N/A SK100BZI N/A 3.670 in93.2 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 14,612 lbf6628.18 kgf N/A 33,721 lbf15295.8 kgf N/A 4,500 rpm N/A 47.9 lb21.8 kg N/A A2-6
N/A SK100BZI N/A 3.670 in93.2 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 14,612 lbf6628.18 kgf N/A 33,721 lbf15295.8 kgf N/A 4,500 rpm N/A 55.4 lb25.1 kg N/A A2-8
N/A SK100BZI N/A 3.670 in93.2 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 14,612 lbf6628.18 kgf N/A 33,721 lbf15295.8 kgf N/A 4,500 rpm N/A 47.9 lb21.8 kg N/A A2-11
N/A SK120BZI N/A 4.140 in105 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 15,736 lbf7138.04 kgf N/A 35,969 lbf16315.52 kgf N/A 4,000 rpm N/A 72.6 lb33 kg N/A A2-11
N/A SK140BZI N/A 4.920 in125 mm N/A +/- .040 in+/- 1 mm N/A 0.275 in7 mm N/A 16,860 lbf7647.9 kgf N/A 38,218 lbf17335.24 kgf N/A 4,000 rpm N/A 89.1 lb40.5 kg N/A A2-11
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