This right-hand knife mounts on the chopping drum of a self-propelled forage harvester. It cuts the crop against a stationary shear bar, reducing material to the length needed for ensiling or direct feeding. The knife is positioned on the drum in a staggered pattern so each blade takes a clean slice without overloading the drive. A dull or chipped knife leaves ragged stubble and increases the power draw from the engine, which can overload the gearbox. This original part is machined to match the drum’s mounting-hole pattern and the shear-bar gap, so no shimming or re-drilling is needed during replacement. When installing, tighten the mounting bolts to the specified torque and check the clearance between the knife edge and the shear bar.