This Teflon bushing serves as a low-friction bearing surface for the pick-up drum shaft on a self-propelled forage harvester. It sits between the rotating drum shaft and its stationary housing, allowing the drum to turn freely under heavy crop load. The bushing material provides a self-lubricating surface that resists contamination from dust and plant debris. Wear on this bushing causes increased play in the drum, leading to vibration and misalignment of the pick-up tines. The manufacturer machines the bushing to match the original housing bore and shaft diameter, so no reaming or shimming is required during installation.