Timken 748S-742 Tapered Roller Bearing Assembly

The Timken 748S-742 TS (Tapered Single) roller bearing assembly combines the 748S cone and 742 cup for heavy-duty, mixed radial and axial loading in industrial gearboxes and power transmission systems. This through-hardened chrome steel bearing set provides precise shaft alignment and extended service life in demanding equipment such as mining machines, construction machinery, heavy-duty trailers, conveyors, agricultural equipment, and other rotating drives. Key specifications include MPN 748S-742; Series 745; Bore 3.0000 in (76.200 mm); Outer Diameter 5.9090 in (150.089 mm); Overall Width 1.7500 in (44.450 mm); Cone Width 1.8375 in (46.673 mm); Cup Width 1.4375 in (36.513 mm); Weight 8.1 lb (3.7 kg); Material Through-Hardened Chrome Steel; Dynamic Radial Load Rating C1 84,700 lbf (377,000 N); Dynamic Radial Load Rating C90 21,900 lbf (97,600 N); Static Radial Load Rating C0 93,800 lbf (417,000 N); Dynamic Axial Load Rating Ca90 12,200 lbf (54,400 N); Maximum Shaft Fillet Radius 0.140 in (3.600 mm); Maximum Housing Fillet Radius 0.130 in (3.300 mm); Shaft Backing Shoulder Diameters Front 3.43 in (87.00 mm), Back 3.66 in (93.00 mm); Housing Backing Shoulder Diameters Front 5.63 in (142.00 mm), Back 5.28 in (134.11 mm); Geometry Factors K 1.80, e 0.33, Y 1.84, Cg 0.0898.