This inner ring is designed to be fitted onto the shaft as part of a needle roller bearing assembly, providing a cylindrical running surface for the rolling elements. The bore diameter is 100.0 mm and the width is 40.0 mm, with a net mass of 0.787 kg. The heavy-duty (XL) design allows it to carry the load transferred from the needle rollers directly to the shaft. Since this is a separate inner ring, it is intended for use where the housing bearing does not include its own inner ring, allowing the shaft to be machined without the need for a hardened and ground raceway. The cylindrical bore ensures a straightforward interference fit on the shaft, and the component must be paired with a matching needle roller and cage assembly or full complement needle roller bearing of corresponding bore size for correct operation.