Abstract: The compressed air vibrator has a housing (1) with an inlet opening (8) for admitting compressed air to a chamber (14) and an outlet opening (9) for the exit of air from the chamber (14). Ball bearing assemblies (11, 15) are disposed with slight play on the shafts (2a, 2b) of the rotor (2). These ball bearings are fitted, also with slight play, in bores (12a, 13a) of oppositely located covers (12, 13) that close about the rotor (2) and close the open ends of chamber (14). The play is adjusted in such a way that the outer races (11a, 15a) of the ball bearings turn in the bores (12a, 13a) of the covers during the rotational movement of the rotor (2). The vibrator also can include a counter-flow air brake to slow rotor rotation.

Abstract: A compressed-air vibrator with a turbine drive, which includes an unbalanced cylindrical rotor, an essentially closed housing having a cylindrical chamber in which the rotor is rotatably supported, with an inlet opening on the housing for the inlet of compressed air into the chamber, and with a discharge opening for the egress of air from the chamber. The rotor is constituted of at least two segments which possess different specific weights to provide the necessary imbalance.