Yes you need I believe a 12 ton press. You can buy the bearings off Amazon but you'll have to get them pressed in. Make certain that whoever does the press job gets all of the parts in place. Leaving a spacer ring out caused us all sorts of grief: wheel came flying off ect. And diagnosing the problem was tough. I finally took it to a machinist shop here and he spotted the problem and fixed it.
People replace the axle to get rid of the Nevr Lubes.