Products for bench top machinists | LittleMachineShop.com

Chuck Adapter, 1"-10 Thread 4" Diameter

Chuck Adapter, 1"-10 Thread 4" Diameter - Main image
$25.51 $34.95 In stock

This adapter is for a 4" 3-Jaw or 4-jaw chuck

See LittleMachineShop.com PN 1917 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 (5.0 / 5 · 5 reviews)

Eli J. ★★★★★

Machined the mounting holes last night, and the 4" diameter provided plenty of room for precise alignment on my lathe. The 1"-10 thread engaged smoothly without any binding.

Lily ★★★★★

Mounted this on my lathe yesterday and the 4-inch diameter fit perfectly with my existing chuck setup. The threads engaged smoothly right from the start, which made dialing in the runout much easier than I anticipated.

Isabella ★★★★★

The threads were cut clean and true, which saved me setup time when I mounted it on my lathe. I had to face and bore mine to fit, but the blank left enough material for a snug fit.