This set of four rubber paddles is installed in the cleaning system of the parent combine. The paddles are mounted on the rotating shaft of the cleaning fan or rotary separator, where they move grain and chaff across the sieves. A worn or missing paddle reduces air velocity and material movement, leading to incomplete separation and increased grain loss in the tailings return. The manufacturer matches the original paddle geometry to maintain the correct clearance between the paddle tip and the housing wall, which is critical for consistent airflow and material conveyance. When replacing, inspect the mounting hardware and replace any worn fasteners to prevent the paddle from detaching during operation.