The Timken Company 48220 Tapered Roller Bearing Cup

The Timken Company 48220 Tapered Roller Bearing Cup is a single-row cup designed to mate with a compatible Timken cone (48290) to support combined radial and axial loads in heavy‑duty rotating equipment. Engineered to operate with Timken 48290 cones, it is widely used in rolling mills, industrial gearboxes, mining equipment, construction machinery, heavy‑duty axles, and other power transmission systems where durability and precise load distribution are essential. Key specifications include an outside diameter of 7.1875 inches (182.563 mm), an outer ring width of 1.3125 inches (33.338 mm), and a maximum housing fillet radius of 0.130 inches (3.30 mm). The housing backing shoulders measure 6.95 inches (176.53 mm) on the front face and 6.61 inches (167.89 mm) on the back face, and the unit weighs 7.2 pounds (3.3 kg). Design units are inches, with a single-row tapered bearing cup geometry (Cg 0.114, ISO e 0.31, Y 1.97). The part is associated with Federal Mogul and Bower brands, manufactured by Timken, and typical applications span rolling mills, industrial gearboxes, mining and aggregate equipment, construction machinery, and other heavy‑duty power transmission assemblies. For replacements, the compatible cone is Timken 48290, with SKF and NTN offering equivalent tapered bearing cups.