Timken 472D-484 Tapered Roller Bearing Assembly

The Timken 472D-484 TDO tapered roller bearing assembly is a matched double outer cup set designed to support heavy combined radial and axial loads in demanding industrial rotating equipment. It combines cone 484 and cup 472D in Timken’s TDO (tapered double outer) design, an inch-based bearing with a stamped steel cage for durability. Key dimensions include bore 2.7559 in (70.000 mm); outside diameter 4.7244 in (120.000 mm); cone width 1.1420 in (29.007 mm); double cup width 2.1250 in (53.975 mm); bearing width 2.5626 in (65.090 mm). Fillet radii are: maximum shaft 0.080 in (2.000 mm) and maximum housing 0.030 in (0.762 mm). Dynamic radial load ratings are C90 37,200 N; two-row C90 64,700 N; C1 250,000 N; dynamic thrust Ca90 24,500 N; with a K factor of 1.52 and ISO e factor of 0.38. This bearing assembly is commonly used in rolling mills, industrial gearboxes, mining equipment, heavy machinery, and power transmission systems where precise load distribution and long bearing life are essential. Common replacements include Timken 482-472D and Timken 483-472D, with SKF equivalent TDO tapered roller bearing assembly.