Abstract: A cleaning machine for cleaning dirty, greasy or otherwise polluted metal parts comprises a foraminated basket for receiving said metal parts, which basket is rigidly mounted for rotation with a rotatable wheel. The wheel is driven by spray jets from spray nozzles around the periphery of the wheel. The spokes of said wheel have their free ends provided with vanes mounted thereon in a freely swingable position. Within certain limits of the rotation speed of the rotor the vanes are hit by the spray jets. If a specific speed is exceeded, the vanes are swung outwards by centrifugal forces and brought beyond the effective operation area of the spray jets. In the absence of a driving force the rotation speed will go down. In this way an automatic controlling of the rotation speed is possible.