Premature wheel bearing failures.

he Moog picture shows a 2x bearing and your truck is a 4x4. Just saying the picture is wrong. You haven't told us any details about your truck/wheel/tire set-up, only that the bearings are no good. The factory bearing also went bad. What about that. Same side keeps wearing out. More to this story than we are being told.
I have to disagree with the picture shown comment that is not a 2wd hub! Why would a 2wd bearing have splines?