WECO presents a full line of energy-saving, durable, adjustable, versatile, rotary electric vibrators. They offer more efficient handling of bulk solids in a wide variety of applications from food processing and pharmaceutical to heavy industrial. These heavy-duty vibrators in single or three-phase models are designed and built to withstand punishing industrial use. Spike-resistant three-phase models can be supplied to withstand the special electrical loads encountered with inverter use. The unbalance motor generates rotary centrifugal force due to unbalance weights fixed on either side of the motor. This centrifugal force set the hole mass vibrating. The frequency of vibration depends on motor RPM and the amplitude of vibration depends on the mass being vibrated.