This self-aligning bearing supports the straw walker shafts in the cleaning unit of a grain harvester. It accommodates minor shaft misalignment that occurs during operation, reducing binding and wear on the shaft and housing. The bearing includes a clamping ring that secures it to the shaft without additional machining. A worn bearing produces increased vibration and noise from the straw walker assembly, and if left unaddressed can lead to shaft scoring or housing damage. The manufacturer machines the bearing race and ball complement to the same tolerance as the original assembly, so no shimming is required during replacement. On installation, ensure the clamping ring is tightened to the specified torque and that the bearing is fully seated in its housing.