>>1499050>doubtSome deep groove bearing have nylon separator. It's sole purpose is to keep distance between balls.
>irreverent when coomsoomers just dispose of their cheap shit cartridge bearings the moment they clap out from being weak as fuckE-bike hub motors, which are heavy and allow to go fast, they use deep groove bearings without any issues. So I don't know.
Motos have cast aluminium covers with seat for bearings, and hardened steel axle.
Cartridges, however, work differently tho
