woodworker88 wrote:

This is an interesting topic, because on larger machinery such as the
clausing drill press and the excello knee mill our shop has, both have
jacobs keyless chucks, even though the mill one has a 5/8" capacity.
In fact, I did some work with CNC tooling and it too had a high-quality
keyless chuck. I think that 1) these are high quality chucks (they
aren't cheap either) and 2)the machines these are used on run slower
with better quality drill bits, so slippage isn't as much of an issue.
If you think about it, a drill chuck in a drill press has less leverage
when you tighten it by hand then when you take a cordless drill and
hold onto the chuck with one hand and gun it.

The thing about drill/mill chucks: they're big & heavy, they're
expensive, and they don't have 3/8-24 threaded mounts. Bob