Timken 9386H/9321 Tapered Roller Bearing Cup And Cone

The Timken 9386H/9321 is a TS (Tapered Single) bearing assembly featuring the 9386H cone and 9321 cup, engineered to support heavy radial and axial loads with precise shaft alignment and long service life in demanding industrial gearboxes and power transmission systems. It is widely used in industrial drives, mining equipment, construction machinery, heavy-duty trailers, steel mills, and conveyors, with common replacements including SKF 9386H/9321, NTN 9386H/9321, and KOYO 9386H/9321 to fit similar applications. Key specifications include Series 9300, design units in inches, through-hardened chrome steel with a stamped steel cage; bore 3.3125 in (84.138 mm), outside diameter 6.7500 in (171.450 mm), overall width 1.0000 in (25.400 mm), cone width 1.8125 in (46.038 mm), cup width 1.2500 in (31.750 mm); weight 10.4 lb (4.7 kg); dynamic radial load ratings C1 81,600 lbf (363,000 N) and C90 21,200 lbf (94,100 N), static radial C0 78,800 lbf (351,000 N), dynamic axial Ca90 27,700 lbf (123,000 N); maximum shaft fillet radius 0.140 in (3.600 mm) and maximum housing fillet radius 0.130 in (3.300 mm).