[josh77]

I had same problem on my 97 axle with bearing & shaft I did put it back in with a new bearing when in 4wd it had a vibration at speed and the auto hub didnt work smooth being it was holding the shaft and not the bearing eventually changed it out when I sold the axle
in my opinion I would return the wrong one and find correct 1
also the 50 and 60 use different shafts in the obs but I think the 99 up 50/60 were the same may be where the confusion is from

 

[josh77]

Just want to clear up what I think is a misconception on your part… In your original post, you ask if that defective bearing race could be used on a truck that only goes into four-wheel-drive a handful of times. That bearing race is only having movement when the hubs are free. So if you had asked, I always leave my hubs in, can I use this stub shaft, the answer would have been yes. The needle bearing is only active when the wheel is turning and the axle is not turning.

actually that bearing only spins when it is in 4wd,
it is pressed into the stationary spindle and axle rides in it so is only spinning when hubs are locked or tcase is engaged