This ball bearing supports a rotating shaft within the cleaning system of a grain harvester. It is a double-sealed, deep-groove type, which retains its internal grease and excludes dust and chaff from the bearing raceways. The bearing carries the radial load from the shaft and maintains the alignment of the driven component, such as a fan or sieve drive pulley. A worn or seized bearing causes vibration, misalignment, and increased drive load, which can lead to belt or shaft damage. This part matches the original housing bore and shaft diameter, so no adapter sleeves or shimming are required during installation. When replacing, ensure the shaft journal is clean and free of burrs, and press the bearing onto the shaft using the inner race only to avoid brinelling the balls.