Construction equipment—excavators, wheel loaders, crushers, screens, and conveyors—subjects bearings to heavy shock, continuous vibration, shaft deflection, abrasive dust/mud, and heat at hubs and drives. Effective designs prioritize high static/dynamic capacity, misalignment tolerance, heat-stabilized rings with C3/C4 clearances, and heavy-duty sealing with grease-purge paths for long service life.