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1041 3-Jaw Self-Centering Chuck (2.5″)


1041 2.5″ dia. 3-Jaw Self-Centering Chuck (includes 2 tommy bars, not pictured).
Also available:
1068 (12mm x 1mm thread)* $126.00
1070 (1/2-20 thread)* $126.00
1031 (14mm x 1mm thread)* $126.00

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SKU: 1041 Categories: ,

Product Description

Three-jaw chucks are designed so that all three jaws move together and automatically center round or hexagonal parts or stock to within a few thousandths of an inch. These chucks provide the quickest and easiest way of holding work in the lathe. For this reason, they are the most popular of the Sherline accessories. The Sherline 3-jaw chucks are designed so that they can be used to clamp externally on bar stock or internally on tube stock. The jaws are reversible to accommodate larger stock.

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) or Sears 6″ lathes (1/2-20).
*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.

Other Purchasing Options:

1040 3-Jaw Self-Centering Chuck (3.1″)
1040C Electroless Nickel-Teflon Coated 3-Jaw Chuck (3.1″)
1044 4-Jaw Independent Chuck (2.5″)
4058 Spindle Bar Grips
Interchangeable Chuck Top Jaws

The improper use of machine tools and their accessories can result in serious injury. Before using this tool, thoroughly read the instructions and make sure you understand its proper and safe use.


Always wear safety glasses when operating machine tools.

Download PDF 1040 Instructions

Instructions PDF Download

Chuck Diameter 2.5″
Jaw Capacity With jaws in normal position: 3/32″ (2mm) – 1-3/16″ (30mm)

With jaws in reverse position: 3/32″ (2mm) – 2-1/4″ (56mm)

Through Hole Diameter .687″ (17mm)
Thread Size 3/4-16 (other thread sizes available)
Chuck Body Material 12L14 Steel
Chuck Jaws Material 12L14 Case Hardened Steel

Because chuck jaws are factory ground to precisely match each chuck body all replacement orders must be made by phone.

1041 3/4-16 Sherline 2 lb. $105.00
1068 12mm x 1mm Unimat SL 1000 2 lb. $126.00
1070 1/2-20 Older Sears 6″ lathes 2 lb. $126.00
1031 14mm x 1mm Unimat 3 or Cowells 2 lb. $126.00