Review on 🛡️ Shielded Bearing Lubricated Power Transmission Products - PGN 6000 ZZ by Christian Young

Sigh, what does it take to get decent bearings around here? All 4 bearings do not rotate freely. In fact, they are so bad that they cannot make a single revolution themselves. Either the tolerances are bad or the balls are so full of dirt that they can't turn round. If you only want to do low-speed applications with it like skateboards or slow-spinning cars, you should be fine. But anything with high RPM will get excessively hot and warp over time. The build is absolutely frustrating as this is the second provider I've tried here and both have failed. I will also note that one of the bearings I received has pitting. I've attached a photo so you can see for yourself. At first I thought it might be dirt, but no, holes. I don't think they have been used as the rich ones come boxed and boxed. Too bad they aren't better. They look nice and are made of quality metal, but the manufacturing tolerances or quality control are terrible. I think look elsewhere.