This self-aligning bearing supports the threshing drive shaft, allowing it to carry radial and axial loads while compensating for minor shaft misalignment. It sits in the bearing housing on the threshing unit, where it maintains the correct rotational alignment of the drive components. A worn bearing produces play in the shaft, which leads to vibration and uneven load distribution across the threshing drum. The manufacturer machines the spherical outer race to the same curvature as the housing seat, so the bearing self-aligns without requiring shimming. On installation, ensure the shaft is clean and the housing bore is free of debris before pressing the bearing into place.