This self-aligning spherical roller bearing supports the threshing drum shaft within the combine harvester. It accommodates minor shaft misalignment and axial displacement that occur during operation. The C3 internal clearance allows for thermal expansion of the shaft as the machine reaches operating temperature. A worn bearing produces a characteristic rumbling noise from the threshing area and can lead to shaft deflection that misaligns the drum with the concave. The bearing is supplied as a direct replacement for the original component, maintaining the same clearance class and mounting dimensions required by the housing. On installation, ensure the shaft is clean and the housing bore is free of burrs before pressing the bearing into place.