What model are you working on? You shouldnt have to take the hub off to grease it unless you are greasing them other than using a greaser for these. If it is the axle that is stuck put the nut back on 1/8 inch out-flush and hit it with hammer or hit end with rubber hammer without the nut. If it's not that than you have to missing something lol it happens to all of us
You definitely have to take the hub off to grease the wheel bearings, it's the bearing carrier you don't have to take off.
Can't you tell what it's bound up on? Only things it could seize on would be the axle splines or the inner race of the wheel bearing....if the splines have crossed by some miracle, or it's seized on the bearing...you're going to need to replace something in the system...if it's just seized on the splines, you might wind up ok....but either way, have you tried spraying some penetrating lube into the splines from the front, and then in from the back under the axle cup? What kind of puller did you rig up? Does it move at all? Again..some pictures might be helpful...
Ok I was confused than I understand now I had the carrier and hub backwards lol. Yea you do have to take that off to grease them but yea spray some kano in there and keep working at it. Was anybody ever in there b4? They didnt decide to put red thread locker on something did they?
ive been spraying knocker loose in there ! I built a really stout puller it pulls the lugs, couple tons of pull, heated the hub to really hot and beat the center bolt on puller and it didn't budge !!! gotta be stuck in bearing !!