Timken 48320-D Double Cup Roller Bearing Assembly

The Timken 48320-D is a double outer cup (TDO) bearing component for Timken tapered roller bearing assemblies, engineered to carry heavy combined radial and axial loads in demanding industrial rotating equipment. In the 48300 series, this Cup Part No. 48320D provides a 7.5000 in outside diameter and a 2.8750 in width, with a weight of 15.28 lb, and is specified for inch design units. It features a maximum housing fillet radius of 0.030 in and a Da of 7.280 in, with geometric factors K 1.82, ISO e 0.32, Y1 2.10, Y2 3.13, and Cg 0.121, supporting high rigidity and load distribution under heavy overturning moments. Typical installations include rolling mills, industrial gearboxes, mining equipment, paper mills, construction machinery, and other heavy rotating systems requiring dependable service life. Common replacements include Timken 48393-48320D, 48320DC, and SKF equivalent.