WORKHOLDING

MODEL 5C (left), MODEL 2J (center) & MODEL 3J (right)

Dunham Draw Tube Actuated Collet Chuck Assemblies for converting CNC lathes to workholding with 5C, 2J, 3J and 16C collets are available. These productivity enhancing systems have a built-in concentricity adjustment (under 0.00050" TIR) and can be mounted on all American standard spindles in less than 20 minutes. Only one required because each spindle adaptor of the assembly will accept any of Dunham's 5C, 2J, 3J and 16C collet adaptors. Change-over is accomplished quickly and easily by the removal and replacement of only six bolts on the collet adaptor. Also available for camlock style spindles.	FEATURES & BENEFITS: Adapts CNC lathes for standard 5C, 2J, 3J and 16C collets, expanding collets, and 5C step chucks Each spindle mount accepts 5C, 2J, 3J and 16C collet adaptor Built-in concentricity adjustment (under 0.00050" TIR) Workholders are actuated by machine closer Light weight permits higher turning speeds Balanced design for smooth running Easy and fast mounting (less than 20 minutes) Collet unaffected by centrifugal force Small body diameter reduces tool interference Consistently lower cost

Machine Make
Machine Model
Spindle Size A4, A5, A6, A8	A
Spindle I.D.	B
O.D. Draw Tube	C
I.D. Draw Tube	D
Draw tube external thread size	E
Draw tube internal thread size	F
Draw tube fully extended	G
Draw tube fully retracted	H