Timken 742-B Tapered Roller Bearing Cup Outer Race

The Timken 742-B tapered roller bearing cup is a precision flanged outer race for single-row tapered roller bearing assemblies that support combined radial and axial loads in heavy-duty rotating equipment. Common applications include industrial gearboxes, mining equipment, construction machinery, heavy-duty trailers, and power transmission systems where accurate bearing alignment and secure axial positioning are essential. Designed to pair with Timken cones in TSF bearing assemblies, it works with compatible cones such as 745A and 749 to provide positive axial location and reliable seal alignment. Key specifications include MPN 742-B, through-hardened chrome steel construction, OD 5.9090 in, D1 6.2170 in, Cup Width 1.4375 in, Flange Width 0.3125 in, Housing Backing Shoulder Diameter – Frontface (Da) 5.64 in, Weight 7.10 lb, K Factor 1.80, e Factor 0.33, Y Factor 1.84, Cg 0.0898.