"Terry Keeley" tkee(no spam)@(or mail)rogers.com wrote in message
.. .
Here's a good diagram of the different arrangemenats and their symbology:

http://www.nhbb.com/engineering/precision/preload.cfm


Can anyone describe which face is the "" and which is the ""?

The Fafnir 7205WN SU bearings that Clausing sold me don't have any circles,
dots, or "" marks that I can see. I'm guessing that the marked edge is the
face - would that make sense?

I suspect that my 8520 still has the original bearings, so it may be
possible to check that way, but it would be better to know this ahead of
time.

Mike

PS: Terry - this has been a great thread!