Timken 48385 Class 3 Double Tapered Bearing Cone

The Timken 48385 Class 3 Double Tapered Bearing Cone is a precision single-row tapered roller bearing cone with a 5.25 inch bore, designed to support heavy combined radial and axial loads in demanding industrial rotating equipment. It mates with Timken 48320, 48320D, or 48320DC bearing cups and is commonly used in rolling mills, industrial gearboxes, mining and aggregate equipment, construction machinery, and heavy-duty power transmission systems. Key specifications include MPN 48385, Series 48300, design units inch, bore 5.2500 in, inner ring width 1.5625 in, weight 16.15 lb, and static radial load rating 122,000 lbf, with dynamic radial load ratings of 16,500 lbf (C90) and 63,600 lbf (C1); two-row dynamic ratings are 28,700 lbf (C90) and 111,000 lbf (C1), and dynamic thrust Ca90 9,060 lbf. Other design details include stamped steel cage, maximum shaft fillet radius of 0.140 in, shaft backing shoulder diameters (frontface) 5.59 in and (backface) 5.83 in, effective center location -0.16 in, geometry factor 0.121, and a K factor of 1.82.