This gearwheel transmits drive within the threshing unit of a combine harvester. It meshes with the adjacent shaft or drum gear to maintain the rotational speed and timing of the threshing mechanism. A worn or damaged gearwheel causes slippage or irregular drum speed, leading to incomplete separation of grain from the crop material. Manufactured by JAG, this component is machined to match the original gear's tooth profile and bore diameter, so it engages correctly with the mating gear without requiring shimming or modification. On installation, verify the gear's rotational alignment and secure it to the specified torque.