A hydraulic press is great if you have one, but not mandatory. Beefking the concept right. I made up a little tool. This consisted of a 19mm socket (because it was the same O.D. as the bearing), a larger socket to catch the bearing as it comes out, a 10" length of threaded rod, some nuts for the rod, and a bunch of flat washers. The idea is to make a press: The rod goes through the bearing. The small socket goes one one side of the bearing, the large socket on the other. The nuts and washers go on either side. Turning the nut moves the smaller socket, which presses the bearing out.