Thanks for all the responses.
I’m very mechanically inclined. This just happens to be the first trailer I’ve owned myself. I’ve delt with wheel bearings before. On someone else’s trailer...about fourteen years ago.
I’ll have to just get them off and see what I’m dealing with I guess. I kind of figured that for most stuff in the rv world things were pretty standard as far as sizes used for this length trailer, etc...
Hopefully I can just get replacement bearings and seals at my local auto supply store. Hate to order and have to wait for that kind of thing.