Urgent help - confirm Trailer bearings for HF 1720#

[tcolar]

Hi there i have a trailer built on a HF 1720# frame (4*8) , it has about 9k miles on it.

Currently on a trip with the family near moab utah, UT. One of my tires blew. Had a spare and changed it but seems to me the wheel is a little lose and seem to be able to travel a little "in and out" of the axle ..... I don't think it use to be like that. Drove some after changing the wheel and the axle/hub cap to did not get warm so maybe it's all ok.

In any case i'm thin king the bearings might be getting bad maybe.

I dis find some bearings #30205 which I believe are the right one but I'm not 100% sure.
They do have the 25mm inside size that seems good, but i thought i read somewhere the external size should be 52mm but the sleeve is that size and not the actual bearing (that seems around 48 or so) so I wanted to make sure if that was correct.

Here is a picture:
gallery/image_page.php?album_id=358&image_id=118777&sk=t&sd=d&st=0&display=popup

also if their is a link as far as an howto replace the bearings, its's been a while since i originally did it !

Thanks.