Timken 28584-902A1 Matched Double Row Tapered Bearing Assembly

The Timken 28584-902A1 matched double-row tapered roller bearing assembly is a preassembled, factory-matched unit that combines two single-row tapered roller bearings into a single, easy-to-install set for consistent preload and precise shaft positioning under heavy radial and axial loads. Designed for fixed shaft positions, it delivers high rigidity and reliable performance in industrial gearboxes, conveyors, mining equipment, material handling systems, and other heavy-duty power transmission applications. The assembly features a cylindrical bore of 2.063 in (52.387 mm), an outside diameter of 3.625 in (92.075 mm), and an overall width of 2.156 in (54.752 mm), with a cone width of 1.000 in (25.400 mm) and an outer ring width of 1.781 in (45.227 mm). It uses a double-row configuration with a steel stamped window cage and through-hardened steel bearing material to support demanding service. Key ratings include a dynamic radial load rating (C90) of 5,340 lbf and a static load rating (C0) of 29,200 lbf, with ABMA Class 2 precision, a K factor of 1.55, end play around 0.012 in, and a weight of 3.367 lb (1.53 kg). Maximum shaft fillet radius is 0.14 in (3.5 mm) and maximum housing fillet radius is 0.03 in (0.8 mm). This factory-matched assembly is intended to maintain accurate preload and alignment, simplifying installation and extending bearing life in rugged industrial equipment. Common replacements include SKF and NTN equivalents, depending on the application.