SKF

Vibrating Screen Bearing Selection

Vibrating screens in mining, quarrying, and recycling subject bearings to extreme conditions: high shock loads, aggressive vibration, heavy contamination, and 24/7 operation. The bearing selection for these machines requires specialized consideration of spherical roller bearings with an extra-strong machined brass cage, C4 radial internal clearance, and high-performance sealing. SKF’s selection example walks through calculating the dynamic equivalent load from the screen’s eccentric mechanism, determining the appropriate bearing size using a high safety factor, and selecting an extreme-pressure grease with mechanical stability. The arrangement typically features two spherical roller bearings per shaft in a locating/non-locating configuration that accommodates shaft thermal expansion. Following this proven methodology ensures high reliability in one of the toughest bearing applications, reducing costly screen downtime and maintenance.