This bearing shell is a half-shell component that supports the crankshaft or shaft journal within the straw-walker assembly of a grain harvester. It sits between the rotating shaft and the housing, providing a low-friction surface that maintains alignment and reduces wear on the parent shaft. A worn shell allows excessive clearance, which produces knocking or vibration in the walker mechanism and can lead to shaft scoring. The original shell is machined to the same bore tolerance as the housing, so no shimming is required during installation. On reinstall, ensure the locating tang engages the housing slot and torque the bearing cap to specification.