W.S. Tyler’s Operationa Support Manager, Luigi Petrucci explains that there are several ways to minimise structural vibrations. The first is to evaluate the speed. When making the calculations as to the natural frequency of the structure, don’t overlook the operating speed of other equipment in the vicinity of the screen. The natural frequency of the structure should not coincide with the speed of any other piece of equipment. Changing the speed of your machine can change the natural frequency into your structure.

Secondly, check for proper mounting systems. Having the proper mounting system installed on your machine will ensure a sufficient amount of support under the unit. This will limit the amount of unwanted forces transmitted to the structure, reducing lateral screen movement and reducing noise pollution.

The type of machine is important. A machine with a four-bearing, eccentric shaft design is optimal in reducing vibrations. W.S. Tyler’s F-Class features an advanced eccentric shaft design, supported by four high-performance, double spherical roller bearings. As the eccentric shaft turns, the screen body is forced to follow the shaft movement. While it travels upward, the counterbalance weights move in the opposite direction and create an equal force to that generated by the body. As a result, the forces cancel each other, allowing a dynamically balanced system that transmits minimal to no vibrations into the structure. This allows multiple screens to be placed side by side while minimizing the structural requirements and corresponding investments.