Timken 8575/8520 Tapered Roller Bearing Cone and Cup

The Timken 8575/8520 tapered roller bearing cone and cup assembly is a precision single-row TS bearing set engineered to support heavy combined radial and axial loads in demanding industrial applications. The matched cone (8575) and cup (8520) operate together to provide accurate shaft positioning and long service life in heavy rotating equipment. Fabricated from through-hardened chrome steel and designed for inch (imperial) units, this ABMA Class 2 precision bearing features bore 9.250 in, outside diameter 12.875 in, total bearing width 2.0625 in; cone width 2.0625 in; cup width 1.4375 in. It delivers dynamic radial load ratings C1 126,000 lbf and C90 32,500 lbf, static radial C0 240,000 lbf, and dynamic axial Ca90 22,700 lbf, with a K factor of 1.44, e of 0.41, and Y of 1.48; geometry factor Cg 0.140; maximum shaft fillet radius 0.250 in and maximum housing fillet radius 0.130 in. Weighing 27.2 lb, it is commonly used in rolling mills, mining equipment, industrial gearboxes, heavy conveyors, aggregate processing machinery, paper mills, and power transmission systems. Common replacements include SKF 8575/8520, NTN 8575/8520, and KOYO 8575/8520.