The oil on transfer case side is much lower than the oil seal so only splash oil on that side the bearing being lubricated by gearbox oil.
There was a lad awhile back bought a sealed for life bearing for that location and removed the seal from gearbox side to help restrict oil pathway to transfer case side.
There was a lad awhile back bought a sealed for life bearing for that location and removed the seal from gearbox side to help restrict oil pathway to transfer case side.