Originally Posted by
Mickey2
Doesn't all sealed bearings come out with the entire cartrage? I thought that was the advantage with them? Fancy hubs or less so, with a bit of work, grease and maybe new bearings they can improve vastly. I once had a 1954 hub rebuilt and greased, and the bike mechanics who did it was very impressed on how the old hub cleaned up. I don't think sealed bearings are lubricated, I think you just replace the whole thing?
The cartridge
is the bearing or rather the bearings are inside the cartridge. If you need to replace them, they are replaced as a unit.
Sealed cartridge bearings are, indeed, lubricated. The lubrication is inside the cartridge behind seals. The seals can be pried off and grease added if necessary or desired. But it is often more effective to just replace the cartridge.