Premature wheel bearing failures.

Have you verified that your "Not" running 4wd? Extra drag on the wheel and one side or the other would suffer. Is diff fluid up to spec, again not causing a drag on the wheel. Is this hub fighting the rest of the axle?
By not running 4wd do you mean its locked in 4x4? Im positive its not in 4wd i always run it in 2hi and I don't think its stuck because when it is in 4wd you can tell the front end is very grabby in 4x4. Maybe something in the differential causing drag? I can check the diff fluid! Thank you for your comment this opens up alot of possiblitys