Wheelbarrow ball bearings are components used in the wheel assembly of a wheelbarrow. These bearings consist of small metal balls housed within a circular raceway. They are designed to reduce friction and facilitate smooth rotation of the wheel around its axle. The ball bearings allow the wheel to spin freely, making it easier to maneuver the wheelbarrow, especially when carrying heavy loads or navigating uneven terrain. High-quality ball bearings contribute to the overall durability and performance of the wheelbarrow, ensuring long-lasting and efficient operation.