Products for bench top machinists | LittleMachineShop.com

Chuck Adapter, 1"-8 Thread 5" Diameter

Chuck Adapter, 1"-8 Thread 5" Diameter - Main image
$51.76 $69.95 In stock

Cast iron lathe chuck adapter fits a lathe with a 1"-8 spindle nose thread. This adapter is 5" (125 mm) in diameter and has no chuck mounting holes. Use it for all 5" chucks.

* 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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United States · Return window (days after delivery): 30. Return method: By mail. Return postage: Seller pays.

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Customer Reviews (4.8 / 5 · 5 reviews)

Hannah I. ★★★★★

The 5" diameter fits my chuck perfectly, and the 1"-8 thread spun on smooth with no wobble. Cast iron feels dense enough that I'm not worried about vibration at higher speeds, and since there are no pre-drilled holes, I can mark and drill exactly where my chuck needs them.

Timothy ★★★★★

Threaded onto my 1"-8 spindle without any wobble, and the cast iron feels solid enough to handle my heaviest 5" chuck. The lack of pre-drilled holes meant a quick drilling session, but that’s exactly what I needed for a custom fit.

Andrew ★★★★★

The 5-inch diameter is a perfect match for my lathe’s spindle, and the cast iron feels solid enough to handle steady work without any wobble. Screwed on cleanly and sits flush, so my chuck mounts up true.