Timken 34300DAA Double Row Tapered Roller Bearing Cone Assembly

The Timken 34300DAA double-row tapered roller bearing cone is the inner component of a Tapered Double Outer (TDO) bearing that pairs with a compatible double cup such as the 34478D to form a complete assembly for industrial gearboxes, conveyors, mining machinery, and other heavy rotating equipment. It has a 3.000 in bore and a 4.500 in overall cone width, is a double-row, separable design with precision-ground raceways and a stamped steel cage, and uses through-hardened bearing steel, weighing about 9.5 lb. Engineered to support heavy combined radial and axial loads in both directions, it delivers high rigidity and precise shaft alignment. Key ratings include a dynamic radial load rating of 178,000 N (40,000 lbf) for two-row operation and a static radial load rating of 136,000 N (30,600 lbf); the axial rating (Ca90) is 20,500 N (4,600 lbf). Common applications encompass rolling mills, mining equipment, steel processing machinery, industrial gearboxes, and paper mills.