When interchanging bearings remember that dimensions are not the only thing to go by. Bearings can have different rated working load limits, different heat ratings (tolerances in the bearing typically decide this), different speed ratings (bearing for an analog gauge needle won't have the same rating as a dental drill), and more. For some uses these ratings won't matter much, but for a wheel bearing, I stick with something from a known company which has researched this data for the bearings they are selling.
I worked 10 years in the precision bearing industry before moving to the automotive field.