Review on Uxcell Shielded Groove Bearing A12021500Ux0294 by Sean Flint

well those are bearings, round and true to size but that's it. They have quite a lot of gameplay and gameplay varies between different ones. All have the inner race moving several thousand inches relative to the bottom bracket. I bought to replace a bearing in a cheap Chinese saw thinking they would be good enough but I was wrong. The new bearings were almost as bad as the worn ones I replaced.