And you can get the bearing number right off the bearing too -- can even read it in your post. :)
That is an NMB (nippon miniature bearing) 625ZZ ABEC bearing. Chrome steel, double shield.
Manufacturer's web site:
http://www.nmbtc.com/bearings/
5mm x 16mm x 5mm
And I agree - -the bearing looks fine. Doesn't look like there is any issue.
It's both press fit and glued in place.