On Oct 28, 1:45 am, Wes wrote:

I was at a Favnir or SKF class a few years ago. They said they didn't make
an ABEC 1 and a 3 was likely to be a 5 since their goal is to make good
bearings.

Wes

RIght. My understanding is that they try to make the best bearings
that they can. Then test them and sort them into the various grades.
If they managed to make mostly bearings that meet ABEC-5, they sell
all they can as ABEC-5, and the rest are sold as ABEC-3.

Dan