This component is a separate cylindrical inner ring designed to be used as a mating part for needle roller bearings without an integrated inner ring. It has a bore diameter of 60.0 mm, a width of 28.0 mm, and a net mass of 217.2 g, providing a hardened running surface for the rolling elements. Using a separate inner ring such as the IR60X70X28-XL allows the shaft itself to remain uninhardened, since the raceway function is taken over by this ring. It suits applications where the bearing arrangement requires a defined bore diameter and width combination matching the needle roller complement, giving a precise fit and consistent radial support at the specified dimensions.