This inner ring provides a cylindrical seat for needle roller and cage assemblies, allowing the assembly to run directly on a hardened shaft raceway. It has a bore diameter of 35.0 mm, a width of 30.0 mm, and a net mass of 67.49 g, matching the dimensional series of the corresponding needle roller bearing. Using this ring gives the shaft a hardened and ground raceway surface, which is required where the shaft itself is not hardened to bearing quality. It is suited for assemblies where the inner ring is mounted separately from the outer bearing components, allowing the raceway to be replaced without machining the shaft again.