This bearing housing assembly supports a rotating shaft in the header and threshing unit of a grain harvester. It contains a sealed bearing that carries radial and axial loads from the driven components, such as augers, beaters, or conveyor shafts. The housing mounts to the machine frame through three bolt holes and positions the bearing at the correct height relative to the adjacent sprocket or pulley. A worn or loose housing allows shaft misalignment, which accelerates belt wear and causes vibration in the driveline. This INA-manufactured unit is machined to the original bore and flange dimensions so that it seats against the mating surface without shimming. On replacement, clean the mounting face and tighten the bolts to the specified torque to prevent fretting.