4000Q rear wheel bearings

["steve powers" <spowers@spdg.COM>]

Here's one for you all.

I'm replacing the rear wheel bearings on my '85 4000q. The
ones on the rear strut assembly are different than the ones
that I got from Carlsen.

My old bearings are sealed to the inside (axle side) of the
car, yet are open to the outside (hub) against a race that
is pressed onto the wheel hub. The bearings I received from
Carlsen are shown to be the correct ones, but are sealed on
both sides. I seconded this with the local Audi dealer.

The local Audi guy claims that there was _never_ anything
other than a sealed bearing on the rear hub. Is what I am
seeing simply the remains of a sealed bearing that exploded
when the wheel hub was pulled? Or was there a running change?

Having rebuilt enough bicycle/motorcycle headsets, I believe
I know a sealed bearing when I see it. What gives?

The vehicle is an '85 4000q, VIN WAUFB0858FA166710.

btw - I have access to liquid nitrogen and am wondering if
there would be any problem with freezing bearings or bushings
to install them (other than dropping and shattering)

thanks - I'm learning more about Audis everyday!

- steve