Products for bench top machinists | LittleMachineShop.com

Adapter, 4" Spindle to 5" Lathe Chuck (No Hole)

Adapter, 4" Spindle to 5" Lathe Chuck (No Hole) - Main image
$20.37 $29.95 In stock

This is a semi-machined adapter plate. The side that attaches to the lathe flange is fully machined. The side on which the lathe chuck mounts is not finished.

Mount the backplate adapter on your lathe and complete machining of the chuck-mounting side. This ensures two things; that it will fit your chuck, and that it is concentric on your lathe.

* Note Don't forget to purchase the appropriate set of Studs & Nuts to accommodate changes in chuck or adapter configurations. 

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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)

Leo ★★★★★

Cutting the threads on the unfinished side was straightforward, and it fit perfectly on my 4" spindle. This saved me a lot of time versus making one from scratch.

Elizabeth ★★★★★

Took a chance on this semi-machined adapter, and it was exactly what I needed to mount a 5-inch chuck on my lathe. The unfinished chuck-mount side required a bit of clean-up, but after that, it ran perfectly true.

Sebastian ★★★★★

The flange side fits my lathe spindle perfectly with zero play, so mounting was straightforward. I spent an afternoon truing up the chuck-mounting face on the lathe itself, and now my 5-inch chuck runs dead true. Just remember it's semi-machined, so you'll need to finish that side yourself.