Originally Posted by
Hydrated
It gets confusing, but with the OP's mid 80's hub I'd almost guarantee that his Sealed Bearings aren't cartridge... but a simple cup-n-cone set up with a seal popped on top to keep crap out.
no, these are true cartridge bearings. as i said in my first post, they are standard 6000-RS and 6200-RS series, which defines them as cartridge bearings. there are no cups and cones. there is an inner bore and an outer bore with channel groves on the inside, on which the balls rotate. the balls hold the bores together and the assembly can not come apart. they look like this, but with a black seal, not blue:
unlike the newer cartridge bearings with seals on both sides, mine only have the seal on one side. that is how i was able to clean them without removing the seal.