The aim of the invention is to improve a bearing device for rotatably receiving a control element (2) in lines which guide mediums and pertain to a combustion engine with bearing receptacles (10, 11), in such a way that the assembly thereof is simplified. The bearing receptacles rotatably receive the control element and can be fixed in the lines. To resolve the aim of the invention, the bearing receptacles are connected by means of an at least partially elastic connecting element (14) in such a way that said receptacles form a bearing unit (1). The bearing receptacles, together with the connecting element and the inserted flap, are inserted in a receptacle which is provided in the induction pipe.