This component provides the inner raceway for a needle roller bearing assembly, supplying the running surface for the rolling elements on the shaft seat. The ring is manufactured in a cylindrical bore version with a bore diameter of 85.0 mm, width of 36.0 mm, and a net mass of 387.2 g, matching the XL execution of the IR series. Being a separate inner ring, IR85X95X36-XL is intended for use with a matching separable outer ring and needle roller and cage assembly, allowing the bearing arrangement to be mounted and dismounted independently on the shaft. This design suits applications where the shaft itself does not provide a hardened raceway, letting the fitted inner ring carry the rolling load while keeping the outer bearing components interchangeable.