This gear transmits drive within the grain tank unloading system of a harvesting machine. It engages with the mating gear to rotate the cross auger or discharge conveyor that moves grain toward the unloading tube. A worn or damaged gear causes slippage or jamming, which stops grain flow and can overload the drive shaft. The manufacturer machines this gear to match the original tooth profile and bore diameter, so it seats on the existing shaft without modification. On installation, confirm the gear is fully seated against the shaft shoulder and that the retaining hardware is tightened to the specified torque.