Vibrating screens are used to convey or screen loose materials and are used in mines, quarries, stone crushing plants, foundries, food industry, chemical industry and many other material preparation and processing plants.

The main types of vibrating screens are: two-point screens with circular throwing, two-point screens with linear motion and four-point screens. Vibrating motors and vibrating rollers also belong to the category of vibrating machinery.

Bearing selection and bearing design for vibration machinery:

Among various vibrating screens, rolling bearings bear high loads, mainly shock loads. In order to agitate the material, the bearing must perform circular, elliptical or linear vibration while rotating around its axis. This results in high radial acceleration (up to 7g), which will put additional stress on the bearing, especially the cage. In addition, there are high moving speeds (often with inaccurate bearing positioning) and obvious shaft deflection. These requirements can be met by spherical roller bearings.

For these harsh working conditions, spherical roller bearings that reduce the tolerance of the inner and outer diameters and increase the radial clearance can be used. For shaft diameters of 40 to 150 mm, use the standard type. The centrifugal force of the non-load-bearing roller is borne by two stamped steel plate window-shaped cages, and the radial direction is supported by the cage guide ring on the outer ring. Shafts with a shaft diameter of more than 160mm are supported by vibrating screen bearings. This type of bearing has a fixed center rib on the inner ring and retaining ribs on both sides. The brass cage made of split car is an outer ring guide type.