This bushing acts as a wear interface between a rotating shaft and its stationary housing in the seed drill's metering or drive system. It centers the shaft and absorbs radial loads, preventing metal-on-metal contact that would enlarge the bore over time. A worn bushing introduces play in the linkage, causing inconsistent seed metering or drive slippage. The part is machined to the original outer diameter so it seats fully in the bore without clearance gaps. On installation, ensure the bore is clean and free of burrs; the bushing should be pressed in squarely.