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Phone:516.349.7220 • Fax:516.349.9354
E-mail: sales@microcentric.com Web site: www.microcentric.com
All Categories > Quick Change Collet Chucks > Quick Change Chucks > CB-NK Collet Chucks - Combination Design > Model CB80-NK/A8  


Model CB80-NK/A8, CB-NK Collet Chucks - Combination Design


NK series chucks are a pull back design with the added flexibility of being able to mount end stops inside the chuck body for easy conversion from bar to chucking applications. The collet is coupled directly to the draw tube connector. As the draw tube is actuated the collet is drawn into the tapered seat efficiently translating draw tube force into maximum clamping force.

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 to true-up the chuck assembly within .0002” (0.005mm)
  • 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




 Specifications 

Collet Model

SK80BZI

Max. Clamping Diameter

3.250 in
82.5
mm

Min. Clamping Diameter

0.500 in
12
mm

Through Capacity

2.700 in
68
mm

Spindle Nose

A2-8

Accuracy

.0004 in
0.010
mm

Clamping Range

+/- .020 in
+/- 0.5
mm

Linear Chuck Stroke

.160 in
4
mm

Max. Clamp Force

25,853 lbs
115
kN

Max. Speed

5,500 rpm

Max. Draw Tube Thread

M90x2

Weight

55.5 lb
25.17
kg

A Dimension

5.68 in
144.27
mm

B Dimension

1.105 in
28.07
mm

C Dimension

8.25 in
209.55
mm

Item No.

15 080 352



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