Timken 333A Tapered Roller Bearing Cup Outer Ring

Timken 333A is a single-row tapered roller bearing cup (outer ring) from the 335 Series, designed to pair with Timken cones such as 342, 342A, or 337 to form a complete bearing assembly. The separable cup design and precision-ground raceway deliver high load capacity and reliable operation under combined radial and axial loads while maintaining precise shaft alignment. Cup outside diameter is 3.1486 in (79.974 mm) and cup width is 0.8268 in (21.001 mm); housing backing shoulder diameters Da 3.03 in (76.96 mm) and Db 2.87 in (72.90 mm); bearing material is through-hardened bearing steel; weight approximately 0.50 kg (1.0 lb); maximum housing fillet radius 0.030 in (0.76 mm); e factor 0.27, Y factor 2.20, and geometry factor Cg 0.0676. Applications include industrial gearboxes, wheel hubs, agricultural equipment, construction machinery, and other heavy-duty rotating systems; when paired with a compatible Timken cone, it forms the outer ring of a robust single-row tapered roller bearing assembly.