This bearing supports the threshing drum shaft within the threshing unit of a combine harvester. It carries the radial and axial loads generated by the rotating drum as it processes the crop material. The C3 internal clearance accommodates the thermal expansion that occurs during sustained operation. A worn bearing produces vibration and noise at the drum location, which can lead to misalignment of the drum relative to the concave. As an original-manufacturer component, FAG machines this bearing to the same raceway geometry and clearance specification as the original assembly, so no shimming or housing modification is needed during replacement.