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2.5
2.5" 4-Jaw Self-Centering Chucks

Product #: 1075/1079/1077

Comments or Special Instructions
Quantity:

 (Please note that chucks with a thread size other than 3/4" x 16 are made to order and have a lead time of 5-7 business days)

This chuck combines the ease-of-use advantages of the 3-jaw chuck with some of the advantages of a 4-jaw chuck. It will automatically center square or round stock. (The stock must be accurately shaped for all four jaws to grip.) It will also grip thin-wall tubing in four places rather than three, which spreads out the load and allows more grip without crushing the tubing.

Turning the knurled portion of the outer diameter of the chuck scrolls all four jaws in unison. Included with the chuck are two Tommy bars for tightening and loosening the chuck.

Centering accuracy on self-centering chucks is to within a few thousandths of an inch. If perfect centering accuracy is required, see the section on 4-jaw independent jaw chucks.

This chuck will hold parts from 3/32″ in diameter up to 1-3/16″ with jaws in the normal position and up to 2-1/4″ with the jaws reversed.

Chucks for Sherline and Other Lathes

The chuck is available in several spindle threads for use on Sherline (3/4-16) and other machines such as old Unimat lathes (12mm x 1mm and 14mm x 1mm).
*Please note that chucks with a thread size other than 3/4″ x 16 are made to order and have a lead time of 5-7 business days.

Jaw Options

  • For those who have jobs where speed and ease of use are more important than maximum accuracy and want a chuck that is loose right from the start (No extra charge).
    Add the note “loose jaws” to the “comments/shipping instructions” box when checking out.
  • Soft (unhardened) steel jaws are also available upon request (No extra charge).
    Add the note “soft jaws” to the “comments/shipping instructions” box when checking out.
  • Interchangeable top jaws are also available.




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