Camshaft comp cams bend or not

In my 19 years of writing machine code for cnc equiptment we never
used this equiptment for finish diameters on bearing journals on our
shafts.

We used a cylindrical grinder for this. Our drawing specs. were
+ or - .0005 on the journals. We either used ball bearings or tapered
bearings depending on the horsepower required. The cnc turning
equiptment in our plant could not hold the tolerance or finish on
the journals. A very new machine might but over time it would
probably start to drift.

I'm sure there are some "million" dollar machines out there that
probably will hold these tolerances without grinding, but we never
had any.

With our tolerance we could have .001 runout and still be in tolerance.

This was for 2 bearing journals with a worm thread cut in the middle
to mesh with a worm gear. If the cam has runout greater than the total tolerance I don't think I would use it. Send it back and ask for the
inspection report on it.

Sorry to ramble on......