Timken 387AS Cone and Cup Assembly Tapered Roller Bearing

The Timken 387AS cone with 382A cup is a single-row tapered roller bearing assembly designed for heavy-duty rotating equipment and industrial power transmission, providing reliable support for combined radial and axial loads in industrial gearboxes, conveyors, mining machinery, construction equipment, agricultural machinery, and material-handling systems. It uses imperial design units with a 2.2500 in bore (57.150 mm), a 3.8125 in outside diameter (96.838 mm), and an overall width of 0.8268 in (21.001 mm). The cone width is 0.8640 in (21.946 mm) and the cup width is 0.6250 in (15.875 mm), while the bearing offers a dynamic radial load rating of 24,200 lbf (108,000 N), a static radial load rating of 24,100 lbf (107,000 N), and a dynamic thrust load rating (Ca90) of 3,810 lbf (16,900 N). The assembly uses a stamped-steel cage and weighs 1.3 lb (0.6 kg); cross-references include SKF 387AS/382A, NTN 387AS/382A, and KOYO 387AS/382A.