Hey Iggy,

It will be OK, except if something dumb happens at the higher spindle
speeds. My friend says if it doesn't hit you, it will have a sharp
whistling noise as it flies through the air. That may be an old OSHA
requirement, warning everyone else in the shop to "duck & cover".

Brian Lawson,
Bothwell, Ontario.
XXXXXXXXXXX

On Thu, 21 May 2009 10:27:47 -0500, Ignoramus11200
wrote:

Look at this pictu

http://yabe.algebra.com/~ichudov/mis...Chuck-4545.jpg

This is a 12" lathe chuck for South Bend lathes.

My question is that the mounting seems to be a simple thread. There is
no "lock" like there is on L type mounts, or on camlock chucks etc.

So, it could happen that the big chuck would unscrew itself during
stopping if RPM was too high, the brake was applied too vigorously, or
something broke inside the gearbox. The chuck weighs about 100 lbs, so
having it bounce around the shop would not necessarily be a great
experience.

Am I missing anything?

i