This self-aligning bearing supports a rotating shaft within the threshing mechanism of a grain harvester. It is mounted at a pivot point where the shaft must accommodate minor angular misalignment between the housing and the rotating assembly. The bearing's spherical outer ring allows it to self-align, reducing binding and wear on the shaft and seal. A worn bearing produces increased vibration and noise at the threshing drum, which can lead to uneven crop flow and accelerated wear on adjacent components. This INA bearing is manufactured to the same internal clearance and raceway geometry as the original assembly, so it maintains the designed load distribution without requiring shimming or housing modification.