Cront ehrrl beariing
 

I have a 04 F250 and the front rigjt hub is making a grinding noise and now it also sweaks, I know it is not the brakes so I am thinking wheel bearing. I was told I have to replsace the whole hub, that the bearings alone can not be changed. Is this true? Does the new hub come with any seals/o-rings for the auto hubs? If I have to go that far should I replace the axle joints? Thanks for any help.

Sorry having keyboard troubles can not correct title.