This chain is the drive element for the inclined conveyor that moves crop material from the header into the threshing mechanism. It transmits torque from the drive sprocket to the lower conveyor shaft, pulling the slats that carry the crop mat up the feeder housing. A worn or stretched chain causes slip under load, leading to uneven feed rate and potential plugging of the threshing rotor inlet. The manufacturer machines the pins and rollers to match the original sprocket tooth profile so the chain seats correctly and runs without chordal vibration. On installation, verify the chain tension is set to the specified sag and that both sprockets are aligned in the same plane to prevent side loading.