Abstract: The invention relates to a bearing provided with a carrier surface along which a platform (6) with people or other loads can move on an air cushion, preferably without a motor, wherein the air cushion can be maintained without too great an effort. According to the invention, the form thereof is that of a box (1) with a perforated surface for the discharge of air. The openings in the surface are provided with automatic valves (5) which are connected to the inner area of the box (1). The cavity on one side of the moveable element of the valve (5) is connected to the opening on the upper side of the box (1). The cavity on the other side of the moveable element of the valve (5) is connected to the outer air. The openings on the side of the valve housing are connected to the inner area of the box (1).