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2.5″ 4-Jaw Independent Chuck Body – Various Thread


Independent chucks can be used to hold irregularly shaped parts, center parts with a great deal of accuracy and hold a part off-center. They can clamp stock tighter than self centering chucks. 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.


Clear selection

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 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.

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