This cross joint transmits torque through a driveline that connects the gearbox output to the driven implement on a self-propelled forage harvester. It sits between two universal-joint yokes, allowing angular misalignment while maintaining rotational power flow. A worn cross joint produces driveline vibration and clattering noise at the yoke bearings, which accelerates wear on the surrounding bearing cups and yoke bores. The original manufacturer machines the trunnion diameters to match the needle-bearing clearance in the factory yoke assembly, so no shimming or bushing adaptation is required during replacement. On installation, pack the bearing cups with fresh grease and torque the retaining circlips or bolts to specification.