This component is a separate cylindrical inner ring designed for use with needle roller bearings without an integrated inner ring, providing a hardened raceway surface for the rolling elements. The bore diameter is 50.0 mm, width is 40.0 mm, and net mass is 0.208 kg. The XL suffix indicates a reinforced cross-section version of the standard IR series. Since this is a separate ring rather than a complete bearing unit, it must be paired with a matching needle roller and cage assembly running directly on a shaft, allowing the shaft itself to be omitted from the raceway function. The cylindrical outer surface of the ring is intended for a fixed fit on the shaft, and its precise bore dimension ensures correct radial positioning of the rolling elements relative to the outer bearing component.