Abstract: Roller bearing (100) for mounting a roller journal (210) of a roller (200) in a roller arm (300) of a hot dip coating installation, wherein the roller (200) can be dipped into a metal bath (400) with the aid of the roller arm and is used therein for guiding a strip (500) running through the metal bath. In order to improve known roller bearings for hot dip coating installations to the extent that the bearing arrangement is not adversely affected by a skewed positioning of the roller arm, it is proposed according to the invention to configure the roller bearing cardanically.