One roller supports 40 kg, 12 rollers 480 kg. The rollers should be able to handle it, but you are probably thinking more about the connection to the side panels. If you use blunt Euro screws, that would be advantageous. Maybe there are also rollers with a different attachment. Or, when the cabinet is back against the wall, you could slide something under the side panels. Hmm, but then it would stick out so you can pull it out again. So not such a great idea.