Review on PGN Ceramic Sealed Bearing 30X42X7 61806 by Brandon Plowden

Not a good replacement for a bicycle bottom bracket. Yes, they run very quietly, but the seals don't touch the inner ring. There is a tiny gap between the inner ring and the seal that allows water and dirt to get in fairly quickly. I installed them because I wanted my fat bike to work. And of course after a few dry runs you could hear the sand inside. God knows after you cross the creek. I hope you see what I describe in the picture.