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Chuck question...

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Davo J:
Just keep an eye on the minimum diameter the jaws will hold, because as they get bigger so does there minimum griping diameter.
For me a 200mm 3 jaw is plenty big enough to lift on and off. I have a 250mm 4 jaw and I use the crane to get it on and off.

Dave

PekkaNF:
This might be a silly comment to any veteran, but I'll take my chances and would also check these:

* Clearance between the cross silde and the chuck. If you intend to turn next to chuck,  jaws might come close to cross slide. Espesially if the chuck jaws gets a little out and you happen to have that kind of lathe that there is some considerable distance from the extreme left side from the slide edege to the toolholder. Something to consider on my lathe.
* Then there is always consideration of safe rpm chuck can take. Most lathes are slow, then there is no problem. I have one clunker that could spin 5200 rpm and you don't want do that to all of the chucks.

I have heard quite often a view that 4 jaw selfcentering is best choice to use with soft jaws. I'm going to buy one later this year, this is one consideration.

Pekka

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