koyo is a top quality bearing, highly recommended. i have used them for everything from cars to washingmachines and they are great quality. they actually handle the loads they are rated for and last a long time unlike the cheap chinese bearings you find everywhere. only down side is having to wait for it to arrive but its worth only doing the job once.
not a whole lot that can be said about a bearing really, it works or it doesn't. have 5000k on this bearing so far, exposed more or less in the wheel bearing on a motorcycle, and its still smooth. However, if i was to do this again, i would try to find same size with a double seal for my application.