ER32 Tapping collets or a Keyed chuck for machine tapping.

[davidpbest]

Tim, I've tried all kinds of different chucks. Lots of people love the Made in USA Jacobs N-series, but they shifted manufacturing to China a while back and those are no where near as good as the older versions. If you do buy a used Jacobs N-series that was made in USA, you can always rebuild them, but that path is expensive.

When it comes to keyed type, I have two favorites if you're buying new. Here are my two favorites:

http://www.rotagriponline.com/index.php?page=shop.product_details&flypage=flypage-ask.tpl&product_id=10528&category_id=262&keyword=vertex+drill+chuck&option=com_virtuemart&Itemid=29

and this one with integrated R8 shank:

LlamBrich HEXA SYSTEM Super Precision Drill Chucks with Integrated Shank L40050B - HX16-R8

Offering a huge selection of industrial tool sales online. Find over 100,000 metalworking products, precision measuring tools, power tools & accessories.

www.penntoolco.com

Stick with ball bearing types.

 

[davidpbest]

Woops, wrong link for the Llambirch. The one in the prior message I did buy, and thought it wasn't worth the money and returned it. This is the one I have now:

LlamBrich HEXA SYSTEM Super Precision Drill Chucks with Integrated Shank L40050B - HX16-R8

Offering a huge selection of industrial tool sales online. Find over 100,000 metalworking products, precision measuring tools, power tools & accessories.

www.penntoolco.com

Two years ago, I ordered an Accupro, a Jacobs, and a Vertex and took them all apart too to do a comparison. The Vertex is by far the best of the bunch in terms of construction.