The invention relates to a device for supporting a displaceable separation element (3), in particular a sliding door. Said device comprises a carriage (1), which is guided in a track (2), equipped with a carriage body (10) and mechanically mounted in the track (2) by means of rollers (8) or at least one sliding element (11; 110). The track comprises a central part (2') and two lateral parts (2'), which are equipped with opposing track feet (21) that mechanically support the carriage (1). According to the invention, the carriage body (10) is provided with at least one hard magnetic magnet (12, 120), which exerts a force on at least one of the track magnets (22, 22', 22', 220, 2200) that is connected to the track (2), said force acting in opposition, preferably in an axially parallel manner, to the gravitational force exerted by the separation element (3) on the carriage (1).