Barry N. Turner wrote: I use both a Nova Compac chuck and a Super Nova on
my Jet Mini as I have for almost 2 years with no problems to date(clip)
^^^^^^^^^^^
Barry has it right. This comes up from time to time in this group, and,
after considerable discussion , the answer settles out as Barry said. Not
to worry. It's a concern felt by some turners, particularly those without
engineering background, and those who have not thought it through. The size
and weight of the wood, and the forces resulting from the turning process
have much more to do with the bearing loads that the slight additional size
and weight of the chuck.