We use the vacuum cleaner a lot. I have to replace the brush roll almost every year or two because the bearings are sticking. Wear and tear, and so of course these rollers suffer from the same problem, but there's no getting around that (not that you can have grease fittings in there and drag grease all over the carpet for the engineers to get stuck with sealed bearings).
Robot vacuum cleaner Roborock S5 MAX Global, black
298 Review
Vacuum cleaner Deerma DX700, white
240 Review
iRobot Roomba 692: Smart Robot Vacuum with Wi-Fi, 🤖 Alexa Compatibility, and Pet-Friendly Features for Effortless Cleaning on Any Surface
138 Review
Vacuum cleaner Deerma DX118C RU, white/grey
144 Review