SINGLE-ROW TAPERED ROLLER BEARINGS NSK is designed to support high radial loads and axial loads in a single direction. The bearings come in two and four row versions as well capable of supporting axial loads in either direction. The bearings come in optimized design with high strength cages with a blend of special materials for arduous applications. The bearings are composed of special materials which includes hardened high carbon chromium steel and advanced material patent material of high TF and super TF for operation in more arduous conditions.