I followed the manufacturers instructions to the letter, but got nowhere. I spent 15 minutes with this tool using a 14lb hammer to beat on it. The only thing I manged to do is beat up the tool really badly. This tool did absolutely nothing. In the end I purchased a bearing press and had the bearings separated from the hub in minutes.
I repeat again, the only thing I manged to do with this tool is beat it up badly. The tool is poorly made and has no reinforcement piece where the weld is. Therefore even if it does work, it is prone to failure. In my opinion it was a waste of money and is fit for the trash. Avoid this tool at costs.