Products for bench top machinists | LittleMachineShop.com

Chuck Adapter, Unthreaded 6" Diameter

Chuck Adapter, Unthreaded 6" Diameter - Main image
$53.91 $86.95 In stock

Cast iron lathe chuck adapter has a 75 mm diameter hub and can be threaded to fit any spindle nose thread up to 2.5". It has a 3/8" smooth pilot hole.

This adapter can be used for most 6", 5" or 4" lathe chuck.

This adapter is 6" (160 mm) in diameter and has no chuck mounting holes. Use it for all 5" and 6" 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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Customer Reviews (4.6 / 5 · 5 reviews)

Avery F. ★★★★★

Cast iron's got some real heft to it, which is exactly what I wanted for stability. That 3/8" pilot hole was spot-on for my setup, and threading it to my spindle nose was a straightforward job with the right tap.

Steven Z. ★★★★★

Was a bit nervous about the unthreaded design, but the cast iron is hefty and the 3/8" pilot hole gave me a solid starting point for my own threading job. Took a little setup time, but now it's rock-solid on my 6" lathe and spins true.

Hazel ★★★★★

The cast iron body is heavy and feels solid, and the 3/8" smooth pilot hole made centering straightforward on my lathe. Took a few minutes to clean off some shipping oil, but once threaded for my spindle, it’s been running true with no wobble. Exactly what I needed to mount a 5-inch chuck.