This roller chain transmits drive from the gearbox output to the bale-forming mechanism inside the baler. It engages with the sprockets on the main drive shaft and the packer-finger assembly, synchronizing the feeding and compression cycle. A worn or stretched chain causes timing slip between the plunger and the packer, leading to uneven bale density and increased shock loads on the sprocket teeth. This chain is built to the original pitch and link-plate geometry, so it seats correctly on the sprockets without requiring a master-link offset or shimming. On installation, verify the chain tension per the baler manual and replace any worn sprockets to prevent accelerated wear on the new chain.