Almost. I've seen a horribly cheap toy skateboard once that didn't have bearings, only a plastic center to the wheel. But apart from that, any time you buy a complete skateboard it'll come with bearings.
yeah, theyre for skateboard and scooters
FKD bearings
depending on your bearings
a skateboard has 8 bearings. 2 bearings inside each wheel facing opposite ways inside each wheel
pop them out of the wheel
no
Probably not considering they're roller blade bearings
Bearings are used to let the wheels spin freely and with minimal drag.
yupp yupp
All skateboard bearings will fit ANY sized skateboard wheel because the bearing hole is designed to be the same in all wheels.
Two bearings hold each wheel of a skateboard to the axle. These bearings are generally made out of steel. On some more expensive models, they may be made from silicon nitride, which is a ceramic.