Originally Posted by bentspoke
I just looked it up, the 5205 is a Double Row Angular Contact bearing,... Bore 25mm, OD 52 mm, width 20.6 mm.
It has a static load rating of 3,280 lbs, vs 1,750 lbs for a single row (6205)
Bore and OD are the same, width is wider on the 5205 to accomodate the second row of balls.
Bentspoke. And this spec (for the 5205-2RS) is functionally the same as the Euro 3205.B.2RSR. I believe I'm correct on the 'B' designation being the standard/default and therefore not particularly important.