Products for bench top machinists | LittleMachineShop.com

Lathe Chuck - 4", 3-Jaw, with Adapter to 3" Spindle

Lathe Chuck - 4", 3-Jaw, with Adapter to 3" Spindle - Main image
Lathe Chuck - 4", 3-Jaw, with Adapter to 3" Spindle - View 2
$83.97 $119.95 In stock

4" 3-Jaw self-centering lathe chuck with adapter for the mini lathe. Includes chuck key, inside and outside jaws, and mounting bolts.
The chuck can hold work up to 3.15" (80 mm) in diameter and comes with an adapter for the mini lathe so that you can bolt it on in place of a 3" (80 mm) chuck. This 4" 3-jaw lathe chuck has a 0.87" (22 mm) through hole.
The radial runout of a test bar held in this chuck, when the chuck is mounted true, is 0.003" maximum.

*NOTE: * Note Don't forget to purchase a set of Studs & Nuts to accommodate changes in chuck or adapter configurations. 

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Customer Reviews (4.8 / 5 · 5 reviews)

Claire X. ★★★★★

Bolted right onto my 3" spindle with the included adapter and the runout was minimal on the first try. The inside jaws grip stock up to 3.15" nicely, and having the chuck key and mounting bolts in the box saved me a trip to the hardware store.

Matthew ★★★★★

Swapped out the old 3" chuck on my mini lathe and this dropped right on with the included adapter and bolts. The inside jaws grip aluminum stock cleanly, and it holds up to 80mm without any wobble. The chuck key fits snug too, no slop.

Sofia ★★★★★

The self-centering action on this 3-jaw is dead accurate, and I love that it came with both inside and outside jaws plus the key. I've turned a few 2.5" aluminum blanks already and the grip has been rock solid.