Quick change collets QCC

MicroCentric collet chucks develop higher chucking forces, and have greater rigidity than conventional collet and three jaw chucks. This is due to the efficient transfer of axial draw tube force into radial clamping force on the workpiece.

MicroCentric collet chucks are operated by a simple mechanism which is not only extremely rigid, but also minimizes frictional forces within the chuck. The chucks are available with axially moveable and axially fixed collet. The size indicates the maximum possible bar through capacity or maximum workpiece diameter.

Spannzangenfutter

Selection of collet chucks QCC

Chuck type	Application	Pull down effect	Bar work	Chuck work	Sizes mm
CB-NB	Rotating	Yes	Yes	No	42-140
CB-ND	Rotating	No	Yes	Yes	42-140
CB-NX	Rotating	No	Yes	Yes	65-80
CB-NDR	Rotating	No	Yes	Yes	65-80
CB-NK	Rotating	Yes	Yes	Yes	42-140
CB-NS	Rotating	No	Yes	Yes	42-65
CB-NRB	Stationary	Yes	Yes	Yes	42-100
CB-NRD	Stationary	No	Yes	Yes	65-100

System Highlights of the quick change colltes QCC:

Quick change

Change collets in less than 15 seconds

High clamping force

Parallel clamping design generates higher clamping forces than traditional collet and three jaw chucks

High accuracy

Maintain concentricity within 0,01 mm TIR after collet change

qcc hl1

qcc hl2

qcc hl3

Superior rigidity

Shorter overall chuck length
The workpiece is machined closer to the spindle face
High chuck rigidity improves machinability an increases cutting tool life

qcc dia1

qcc dia2

Large clamping range

Larger range than conventional and master collets
1 mm range on models up to size 80
2 mm range on size 100 and larger models