Timken 745373 Tapered Roller Bearing Cone Assembly

The Timken 74537 tapered roller bearing cone is a precision inner race assembly for single‑row tapered roller bearing systems that support combined radial and axial loads in heavy‑duty rotating equipment. Made from through‑hardened chrome steel and part of the 74000 series, it is designed in inch (imperial) units and is supplied as MPN 74537 (supplied as 745373), compatible with Timken bearing cup 74850. The cone is engineered for use with compatible Timken cups in wheel‑end assemblies, industrial drives, conveyors, heavy‑duty axles, mining machinery, and power transmission systems, where accurate shaft alignment and dependable load handling are essential. Key specifications include bore d = 5.3750 in, inner ring width B = 1.8750 in, maximum shaft fillet radius 0.140 in, shaft backing shoulder diameters da = 5.83 in and db = 6.10 in, geometry factor Cg = 0.134, and weight 29.57 lb. Load ratings are dynamic radial C1 = 85,900 lbf (382,000 N), dynamic radial C90 = 22,300 lbf (99,000 N), static radial C0 = 138,000 lbf (614,000 N), dynamic axial Ca90 = 18,600 lbf (82,600 N). This cone is commonly paired with the Timken 74850 bearing cup in industrial gearboxes, mining equipment, construction machinery, heavy‑duty trailers, and power transmission systems, and is used for repairs, retrofit projects, and preventive maintenance to maximize bearing performance and service life.