Mini Mill Tooling

Drill Chucks

Most mini mills come with a drill chuck. (At LittleMachineShop.com we find that most factory installed drill chucks are of very low quality. It is for this reason that we have the factory install upgraded drill chucks in all of our HiTorque mini mills.)

There are two types of drill chucks to choose from, keyed chucks and keyless chucks. Keyless chucks offer convenience and safety. Keyed chucks are more economical, and they provide slightly (and only slightly) more holding power. We have keyless chucks on our mini mill and drill press and use them for everything.

A drill chuck alone has no way to mount in the mini mill. A drill chuck arbor has one end that fits in the back of the drill chuck and another end that goes in the mini mill's spindle. The chuck to arbor connection is pretty much permanent. You can remove an arbor from a drill chuck, but it takes a pair of special U-shaped wedges to do it.

Drill Chuck Options

Part Number	Product	3MT Spindle	R8 Spindle
1212	Drill Chuck, 1/2"	X¹	X²
3153	Drill Chuck, 1/2" Professional Grade	X¹	X²
1660	Drill Chuck, 1/2" Keyless	X¹	X²
1396	Drill Chuck, 1/2" with R8 Shank		X
1213	Drill Chuck, 3/8"	X³	X⁴
4862	Drill Chuck, 3/8" Professional Grade	X³	X⁴
1659	Drill Chuck, 3/8" Keyless	X³	X⁴

1 With 1806 arbor (Drill Chuck 3MT Drawbar to 33JT)
2 With 1676 arbor (Drill Chuck R8 to 33JT)
3 With 1805 arbor (Drill Chuck 3MT Drawbar to 2JT)
4 With 3999 arbor (Drill Chuck R8 to 2JT)

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