This is a quick easy tool to make, especially if you already have the slide hammer. Just take a 3/8" carriage bolt and turn the square part off and turn the head to .661" or close to it. You want it to just barely slip inside the bearing, so the lip will grab and pull the bearing out. A couple slaps on the slide hammer and it's out.
I used a short piece of square tubing and a couple nuts to couple the bolt to the slide hammer. I made this several years ago and told myself I was going to make a better coupler by threading a short piece of brass rod, but that job still hasn't gotten done.