Products for bench top machinists | LittleMachineShop.com

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

Chuck Adapter, 1-1/2"-8 Thread 4" Diameter - Main image
$22.37 $34.95 In stock

See LittleMachineShop.com PN 1918 for a 4" diameter adapter pre-drilled for a 3-jaw chuck.

* 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 (4.6 / 5 · 5 reviews)

Claire Z. ★★★★★

The included instructions made setup straightforward, and the adapter fit perfectly on my lathe's 1-1/2"-8 spindle after final machining. Having a 4" diameter plate ready for a 3-jaw chuck saved me a lot of time.

Samuel S. ★★★★★

Machined the threads cleanly on my lathe with zero chatter, and the 4" diameter gives plenty of meat for the three-jaw setup I bolted on. The included instructions actually made sense for a change, which saved me a good hour of head-scratching.

William ★★★★★

This arrived in perfect shape with the threads already cut cleanly, so the setup was mostly about dialing in the fit on my lathe. The included instructions made the machining steps pretty straightforward, and now my 3-jaw chuck sits snug with zero wobble.