Timken 748S-742 Tapered Roller Bearing Assembly

The Timken 748S-742 complete bearing assembly is a TS (Tapered Single) tapered roller bearing that pairs the 748S cone with the 742 cup to handle heavy combined radial and axial loads. It features a 3.0000 in bore, 5.9090 in outside diameter, and an overall width of 1.7500 in, with cone and cup widths of 1.8375 in and 1.4375 in respectively, all in Imperial units. Built from through-hardened chrome steel, this 745 Series bearing delivers precise shaft alignment, excellent load distribution, and long life in demanding industrial environments. Dynamic radial load ratings include C1 of 84,700 lbf and C90 of 21,900 lbf, with a static radial rating of 93,800 lbf and a dynamic axial rating Ca90 of 12,200 lbf, making it suitable for continuous radial and thrust loading. Weighing 8.1 lb, the assembly is commonly installed in industrial gearboxes, mining equipment, heavy-duty trailers, construction machinery, conveyors, and power transmission systems, and is a common replacement for SKF 748S/742, NTN 748S/742, and KOYO 748S/742 assemblies. This Timken solution supports equipment repairs, retrofits, and preventive maintenance to maximize reliability and minimize downtime.