Powered by the tractor's hydraulics, the Grain Bag Extractor with Bag Rewinder is designed to, a single operation, unload and simultaneously roll up the plastic grain-storage bag. This allows the grain to be removed from the bag (some as large as 12 feet in diameter and 500 feet long) and not have to return later with a separate bag roller. As the tractor moves slowly in reverse, the Extractor augers the grain out of the bag and into the parallel-moving grain trailer while the Rewinder creates a bale of tightly-wound bag, which can be discarded or reused.