Abstract: The invention relates to a vibrating device (1) that comprises: a supporting structure (2); a first rotating shaft (3) rotatably connected to the supporting structure (2) and having a first eccentric mass (4) secured thereto; and a second rotating shaft (5) rotatably connected to the supporting structure (2) and having a second eccentric mass (6) secured thereto, wherein the first (3) and second (5) shafts are concentric and rotate in opposite directions. The device is light in weight, has adjustable masses and can be coupled to other devices of the same type. Moreover, the device is characterized in that the supporting structure (2) comprises a base (7) and two independent lubricated cavities (8a, 8b) and a plurality of elongate elements (9) that connect the lubricated cavities (8a, 8b) to the base (7).