In VIBCO’s MODEL SVRWS “SILENT” units, 80-85 dB, the rotor in this bearing-less vibrator spins silently around the shaft instead of spinning and noisily hitting the shaft as in conventional units. In VIBCO’s units the exhausting air is also forced through a muffler pad and back over the rotor, further dampening any noise from exhausting air.  The patented air saver design will save air because all the air is not exhausted with every cycle, making them “start every time".  The patented “wear plate” design will prevent end plate wear and cut down on costly maintenance, loss of power, and premature failure.