Timken 52618 Tapered Roller Bearing Cup Outer Race

The Timken 52618 Tapered Roller Bearing Cup (Race) is a single-row cup designed to mate with compatible Timken cones to support heavy radial and axial loads in demanding industrial equipment. With an outside diameter of 6.1875 in (6-3/16 in) and a width of 1.0313 in (1-1/32 in), this 52000-series cup (MPN 52618) fits inch-design assemblies and weighs 5.4 lb. It is engineered to operate with Timken cones 52375, 52387, 52393, 52400, and 52400D, enabling precise shaft alignment and dependable rotation in applications such as industrial gearboxes, rolling mills, mining equipment, construction machinery, and heavy-duty power transmission systems. Key fit details include a maximum housing fillet radius of 0.130 in and backing shoulder diameters Da = 6.00 in (frontface) and Db = 5.59 in (backface). Aimed at replacement, rebuilds, retrofits, and preventive maintenance, this cup is a core component of a tapered roller bearing system designed for high radial and thrust-load capacity.