This wooden bearing shell is a wear component for the walker assembly in a grain harvester. It supports the oscillating shaft that drives the straw walkers, allowing the shaft to rotate while absorbing the cyclic loads from the walker motion. The set includes two plates, two bearing shell halves, four self-locking nuts, and four screws for a complete replacement. Over time, the wooden bearing surface wears, increasing clearance and causing excessive vibration in the walker assembly. Replacing the shell restores the correct shaft alignment and reduces noise. On installation, ensure the bearing halves are seated fully in the housing and torque the retaining screws to the specified value.