This chain drives the elevator mechanism that moves harvested grain from the cleaning shoe into the grain tank. It transmits torque from the drive sprocket to the upper elevator sprocket, maintaining the tension needed to carry the paddles and grain upward. A worn or stretched chain causes the paddles to skip or slip, leading to grain carryover and reduced throughput. The manufacturer produces this chain to match the original pitch and roller profile, which keeps the sprocket engagement consistent and prevents accelerated wear on the drive components. On installation, verify the chain tension is within the specified range and that the sprockets are aligned to avoid side loading.