Rear wheel bearing

I just did a rear wheel bearing on my 2017 Prius. To get the bearing off I bought a 8 1/2 in 3in bolt and nut and 2 washers one being grade 8, and 2 5/8 nuts as spacers. Put it thru one of the holes and tighten it down on the top brake tab. Tell the bearing moved and the bolt got as tight as I can. Hit the bearing with a hammer a few times around it. And it just popped off. The fastest bearing I have ever done. I live in the midwest.