Products for bench top machinists | LittleMachineShop.com

Chuck Adapter, 1-1/2"-8 Thread 4" Diameter, 3 Holes

Chuck Adapter, 1-1/2"-8 Thread 4" Diameter, 3 Holes - Main image
$23.97 $39.95 In stock

This adapter is for a 4" 3-Jaw chuck such as LittleMachineShop.com PN 1698.

NOTE: PN 1792 is the same adapter just without the 3 holes pre-drilled.

* These adapters require machining on the lathe on which they will be used. Instructions are included for final turning of the registration diameter on your lathe to ensure perfect concentricity.

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Customer Reviews (5.0 / 5 · 5 reviews)

Riley ★★★★★

The three pre-drilled holes saved me a ton of setup time, and the thread fit perfectly on my spindle right out of the box.

Joseph I. ★★★★★

After mounting it on my lathe, the threads engaged perfectly with no wobble, and the 4" diameter fits my chuck exactly. Machining the backplate was straightforward because it's got good, consistent cast iron.

Sophia K. ★★★★★

The three pre-drilled holes saved me a ton of setup time—just had to face and bore the shoulder on my lathe.