Timken 52618 Single Row Tapered Roller Bearing Cup

The Timken 52618 Tapered Roller Bearing Cup is a single-row cup (race) designed to mate with Timken cones to support heavy combined radial and axial loads in demanding industrial equipment. This 52000-series cup has an outside diameter of 6.1875 in (157.163 mm) and a width of 1.0313 in (26.195 mm), weighs 5.4 lb (2.5 kg), and is cataloged as MPN 52618. It is intended to operate with compatible cone part numbers 52375, 52387, 52393, 52400, and 52400D, and it offers a maximum housing fillet radius of 0.130 in (3.30 mm) with backing shoulder diameters Da = 6.00 in (151.90 mm) and Db = 5.59 in (141.99 mm). The cup is part of Timken’s 52000-series geometry and is matched to precise shaft alignment for reliable rotational performance in industrial gearboxes, rolling mills, mining equipment, construction machinery, and heavy-duty power transmission systems. Maintenance teams, OEMs, and industrial repair specialists select it for replacements, rebuilds, retrofits, and preventive maintenance to extend bearing service life. Supplemental performance data include ISO e factor 0.47, Y factor 1.26, and geometry factor Cg 0.152.