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Selecting the Proper System for Vibration Mechanisms

There are several options for vibration mechanisms, depending on the application most used. Tables used for testing have two operating systems. Frequencies that will be low, for example, can be powered with a hydraulic system, whereas higher frequencies require an electro-dynamic system. Those types of vibratory motor are designed to test items to the point of destruction to determine reliability. Items are placed on a table, connected to sensors, and different tests are conducted with sound and motion frequencies. Vibration is also used in other industries that do not do testing on a regular basis, such as manufacturing, processing, and construction.

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Not all frequencies are delivered on vibration tables. Some industries and applications require vibration flow bins or cylinders. The purpose of those shakers is to separate, grind, or mix bulk materials. It is important to get the right shaker motor to handle the weight of the materials, the speeds of vibration, and the conditions of the operating environment. For industrial vibrators, a rotary motor is best suited for drier products. The motor creates centrifugal force at a specific frequency. Wet or moist materials tend to clump up or stick together, so a linear motor is better for that product. The shaker oscillates back and forth on an axis, and can move continuously to prevent things from sticking together. An impact, like a hammer stroke, can be added to the inside of the bin to further break up materials.

Both types of motors can be either electric or turbine driven. Electric motors are the most efficient type, but are also a bit more expensive. A turbine motor operates quieter than an electric one, and is more cost-effective. Each has advantages and disadvantages, so business owners will want to compare size, strength, durability, and maintenance costs. Another component to consider is the amount of heat shakers generate. A small or medium sized shaker will have blowers to remove heat. Large ones will have water-cooled cylinders to keep the heat down. If the environment is closed, a small shaker may not be able to fully remove the heat generated during operation. It may be worth the expenditure to get a larger shaker that removed heat more efficiently.

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