This gear transmits drive from the chain conveyor sprocket to the material feeding unit in the parent combine. It is a seven-tooth gear that engages with the conveyor chain to move harvested grain toward the threshing drum. A worn or missing tooth causes chain slippage, which reduces throughput and can jam the feeding mechanism. The gear is machined to match the original shaft bore diameter and tooth profile, so no shimming or adapter bushings are required during replacement. On installation, verify that the retaining clip or bolt is torqued to specification to prevent axial movement.