Products for bench top machinists | LittleMachineShop.com

Adapter, 3" Spindle to 4" Lathe Chuck - 72MM Recess

Adapter, 3" Spindle to 4" Lathe Chuck - 72MM Recess - Main image
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$19.47 $29.95 In stock

This adapter lets you mount 4" 3- or 4-jaw lathe chucks on your mini lathe.

Use this adapter with chucks that have a 72 mm registration recess diameter.

The adapter mounts to the 3-hole pattern on the spindle so it works on spindles with only three holes.

This adapter is cast iron and has a net thickness of 0.66". The net thickness is the distance from the rim of the lathe spindle to the back of the chuck.

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

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Customer Reviews (4.6 / 5 · 5 reviews)

Ryan M. ★★★★★

I was worried the 3-hole pattern wouldn't line up with my lathe's spindle, but the adapter bolted right on with no hassle. The 72mm recess was spot-on for my chuck's registration ring.

Carter T. ★★★★★

Finally I can stop jury-rigging my 4" chuck onto the spindle—this adapter bolts straight into that 3-hole pattern and the 72 mm recess sits dead-centered. Machining feels solid, no wobble on my first two test cuts.

Abigail I. ★★★★★

The 72 mm recess fit my chuck perfectly, and the threads were clean right out of the box. Took maybe 10 minutes to swap everything over, and it runs true with no wobble at all.