The Timken Company 3479 Tapered Roller Bearing Cone

The Timken 3479 tapered roller bearing cone is a single-row TS inner cone from the 3400 Series, designed to pair with Timken 3420 cups to form a complete tapered bearing assembly that supports combined radial and axial loads with precise shaft alignment. Its separable cone design features precision-ground raceways and a stamped steel cage, delivering high load capacity and long service life for use in automotive wheel hubs, trailer axles, industrial gearboxes, conveyor systems, agricultural equipment, and other heavy-duty rotating machinery. Technical specs include bore (ID) 1.4375 in (36.513 mm), cone width (B) 1.1721 in (29.771 mm), weight approximately 0.68 kg (1.5 lb), and materials: through-hardened bearing steel with a stamped steel cage. Dynamic radial load rating (C1) 105,000 N (23,500 lbf); dynamic radial load rating (C90) 27,100 N (6,100 lbf); static radial load rating (C0) 119,000 N (26,800 lbf); dynamic axial load rating (Ca90) 17,000 N (3,820 lbf); plus design factors e 0.37, K 1.60, geometry factor Cg 0.0781, effective center location −8.6 mm (−0.34 in), max shaft fillet radius 0.030 in (0.800 mm), and shaft backing shoulder diameters front 1.75 in (44.5 mm) and back 1.79 in (45.5 mm). Common replacements include Timken 3479, SKF 3479, NTN 3479.