Timken 72188 Tapered Roller Bearing Cone Assembly

The Timken 72188 tapered roller bearing cone is a precision inner race assembly for single-row tapered roller bearings that support combined radial and axial loads in heavy-duty rotating equipment. Designed to be used with Timken 72487 bearing cups, it is commonly installed in industrial gearboxes, mining equipment, construction machinery, heavy-duty trailers, and power transmission systems where accurate shaft alignment and dependable load handling are critical. Key specifications include bore diameter 1.8750 in (47.625 mm), inner ring width 1.2910 in (32.791 mm), weight 10.07 lb (4.568 kg), and load ratings: dynamic radial C1 37,100 lbf (165,000 N); dynamic radial C90 9,620 lbf (42,800 N); static radial C0 39,400 lbf (175,000 N); dynamic axial Ca90 12,100 lbf (54,000 N). The maximum shaft fillet radius is 0.030 in (0.800 mm); shaft backing shoulder diameters are da 2.59 in (65.80 mm) and db 2.64 in (67.00 mm); K factor 0.79 and geometry factor Cg 0.0772. This cone belongs to Timken's 72000 Series (MPN 72188) and is commonly used in wheel-end assemblies, industrial drives, conveyors, heavy-duty axles, and other rotating equipment requiring dependable load distribution and long-lasting bearing performance, with Timken 72487 compatible bearing cups and common replacements including SKF 72188, NTN 72188, and KOYO 72188.