This wooden bearing shell is a half-shell component for the walker assembly in a grain harvester. It provides a low-friction bearing surface for the rotating shaft that drives the walker mechanism, which separates grain from the straw bed. The set includes two half shells that fit around the shaft. Wear on this bearing shell allows excessive play in the walker drive, leading to misalignment and increased vibration in the cleaning system. This part is manufactured to match the original shaft diameter and housing bore, so no shimming is required during installation.