Timken 27689-27620-B Tapered Roller Bearing Set

The Timken 27689-27620-B tapered roller bearing set is a matched single-row TSF assembly (cone 27689 and flanged cup 27620-B) designed to handle combined radial and axial loads while preserving precise shaft alignment in heavy-duty rotating equipment. The flanged cup provides positive axial location, simplifying housing alignment in industrial gearboxes, conveyors, mining equipment, rolling mills, agricultural machinery, and other power transmission systems. Key specifications include bore 3.2813 in (83.345 mm), outside diameter 4.9375 in (125.413 mm), overall width 1.0000 in (25.400 mm); cone width 1.0000 in (25.400 mm); cup width 0.7813 in (19.845 mm); flange outside diameter 5.1211 in (130.076 mm) and flange width 0.1875 in (4.763 mm). This unit is part of Timken's 27600 series, with dynamic radial load ratings C1 of 26,300 lbf (117 kN) and C90 of 6,830 lbf (30.4 kN), static radial load rating C0 of 39,900 lbf (178 kN), and dynamic thrust rating Ca90 of 4,860 lbf (21.6 kN). Weight is 2.4 lb (1.08 kg), and the design features precision-ground raceways, separable cone and cup construction, and optimized internal geometry to maximize performance in demanding industrial applications.