Quick change collet chuck CB-NK, axially moved collet

At the chuck series CB-NK the collets are   engaged directly in the drawtube connector. Through the operation of the clamping cylinder the drawtube moves axially backward. Thereby the collet is pulled into the cone of the chuck body and result is a radial clamping movement with simultaneous pull down effect of the workpiece.

Optional an axially fixed part stop can be installed in the chuck from the front. Because of that this series can be used for bar and chuck work.

Specifications:

Chuck type Through bore mm Clamping range mm Drawtube stroke mm Drawtube force max. daN Clamping force max. daN Max. Speed rpm. Weight kg
CB42-NK 36,0 +/- 0,5 4 3.580 6.425 6.000 7,6
CB65-NK 57,0 +/- 0,5 4 4.590 8.260 6.000 10,9
CB100-NK 93,2 +/- 1,0 7 6.630 11.930 4.500 21,8
CB120-NK 105,0 +/- 1,0 7 6.960 12.530 4.000 33,0
CB140-NK 125,0 +/- 1,0 7 7.310 13.150 4.000 40,5

 

Dimensions:

Order-No. A B C D E F G H
CB42-NK/140 78,6 120,7 144,8 144,8 98,6 98,6 119,4 9,0
CB42-NK/A5 78,6 120,7 144,8 144,8 108,7 108,7 129,5 9,0
CB42-NK/A6   78,6 120,7 144,8 164,6 25,4 106,2 127,0 9,0
CB65-NK/A5 98,7 119,4 164,6 164,6 113,9 113,9 136,5 9,0
CB65-NK/A6 98,7 119,4 164,6 164,6 127,9 127,9 150,5 9,0
CB65-NK/A8 98,7 119,4 164,6 209,6 41,3 134,9 157,5 9,0
CB100-NK/A6 144,8 177,8 237,5 237,5 120,8 120,8 172,5 1,0
CB100-NK/A8 144,8 177,8 237,5 237,5 123,3 123,3 175,0 1,0
CB100-NK/A11 144,8 177,8 237,5 278,1 50,8 144,7 196,3 1,0
CB120-NK/A11 180,0 215,9 278,1 278,1 140,3 140,3 171,5 3,0
CB140-NK/A11 195,6 241,3 303,5 303,5 145,4 145,4 176,5 3,0

 At the chuck designation the adapter plate size is given after the slash:

  • A6 means adapter plate according to DIN ISO 702-1 Size 6 (former DIN 55026)
  • 140 means adapter plate with cylinder pilot 140 mm

 Other adapter plate sizes are available on request

 

Features:

  • Chuck sizes from 42 until 140 mm through bore
  • Axially moved collet with pull down effect
  • Low outer diameter and a short overall length increase the space for tools and the possible travels of the Z-Axis
  • Radial alignment screws
  • Through the lifetime lubrication the chucks need a minimal maintenance
  • All components are hardened and ground for a high accuracy
  • Part stops and part ejectors can be installed in or at the chuck
  • Maximum spindle speed 6.000 rpm.

Key features:

  • Pull down effect
  • Part stop possible
  • Operation through pull

Delivery contents:

  • Chuck
  • Adapter plate
  • Drawtube connector
  • Instruction Manual