This wooden bearing block is a wear component for the straw-walker assembly in a combine harvester. It supports the oscillating motion of the walker shaft, allowing the straw mat to be conveyed rearward while grain falls through the walker grates. The wood material acts as a sacrificial surface, gradually wearing to protect the steel shaft from scoring. When the bearing clearance increases due to wear, the walker motion becomes noisy and the shaft may develop play, reducing separation efficiency. This part is machined to the original profile so it seats correctly in the walker frame without modification. On replacement, ensure the shaft surface is clean and free of burrs to avoid accelerated wear of the new bearing.