nrpetersen
Curmudgeon
Good example. That's why Paul writes the column instead of me (or others.....)Just to clarify terms for people who may be reading:
Take a pencil and stick it through a paper plate - exactly in the center but through at an angle. Twirl the plate and pencil and see it wobble as you turn it. That is axial runout.
as opposed to
Take a pencil and stick it exactly straight through a paper plate but at a point slightly off center. Twirl the pencil and see the edges of the plate appear to move toward and away from the pencil. That is radial runout.