2.5″ 4-Jaw Independent Chucks

$115.50$126

2.5″ 4-jaw independent chuck (includes hex key, not pictured)

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SKU: 1044/1071/1073/1035 Category:

Product Description

These chucks have four advantages over 3-jaw chucks.

  1. They can be used to hold irregularly shaped parts
  2. They can be used to center parts with a great deal of accuracy
  3. 4-jaw chucks can be used to deliberately hold a part off-center
  4. They can clamp stock tighter

This is a valuable asset when machining cams, crankshafts and similar parts. The main disadvantage of the 4-jaw independent chuck is that the jaws must be set individually, adding considerable setup time. The jaws are reversible to accommodate larger stock.

Like the Sherline 3-jaw chucks, the 4-jaw chucks can be used to clamp either externally or internally. Although we recommend the 3-jaw chuck for standard lathe projects, the 4-jaw chuck is considered the accessory that could add the most versatility to your machine. If you feel the 4-jaw chuck would be more useful, and you have no need for the 3-jaw chuck, any lathe “A” package can be ordered with the 4-jaw chuck substituted for the 3-jaw upon request. A clamping groove allows the chuck to hold parts for milling.

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.

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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.

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Always wear safety glasses when operating machine tools.


Download PDF 1030-1032-1044 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.

P/N SPINDLE THREAD USED ON WEIGHT PRICE
1044 3/4-16 Sherline 2 lb. $115.50
1071 12mm x 1mm Unimat SL 1000 2 lb. $126.00
1073 1/2-20 Older Sears 6″ lathes 2 lb. $126.00
1035 14mm x 1mm Unimat 3 or Cowells 2 lb. $126.00