Timken 15520B Single Tapered Roller Bearing Cup

The Timken 15520B single-row tapered roller bearing cup is designed to support combined radial and axial loads while preserving precise raceway alignment in single-row tapered bearing assemblies. Intended for industrial gearboxes, conveyors, agricultural and construction equipment, machine tools, and power transmission systems, it is built to handle demanding heavy-duty rotating equipment and long service life. This imperial-design cup (15500 Series) features an outside diameter of 2.6875 in (68.263 mm), a cup width of 0.6875 in (17.463 mm), and a single-flanged (B designation) cup style, made from through-hardened bearing steel. It is compatible with Timken cones 15578, 15580, and 15590 and is designed to be paired with those cones to form a complete single-row tapered roller bearing assembly. The unit weighs approximately 0.70 lb (0.32 kg). Common replacements include SKF 15580/15520B, NTN 15580/15520B, and KOYO 15580/15520B.