Timken 56650D Double Cup Tapered Roller Bearing Outer Race Assembly

The Timken 56650D is a precision double outer race cup for TDO tapered roller bearing assemblies, delivering high load capacity for heavy combined radial and axial loads in demanding industrial equipment. Built from through-hardened chrome steel as part of Timken’s 56000 Series, this MPN 56650D uses inch-based design units and features an outside diameter of 6.5000 in (165.100 mm) and a double cup width of 2.5000 in (63.500 mm). It is designed to mate with Timken double-cone assemblies in TDO configurations, with a front-face/backing shoulder diameter (Da) of 6.30 in (160.00 mm) and a maximum housing fillet radius of 0.030 in (0.800 mm). The geometry factors—e 0.50, K 1.18, Y1 1.36, Y2 2.02 and Cg 0.158—support precise shaft guidance and even load distribution under continuous operation. Maintenance teams, OEMs, and system integrators rely on this double cup for equipment repairs, bearing replacements, retrofit projects, and preventive maintenance to maximize reliability and service life. Common applications include rolling mills, industrial gearboxes, mining equipment, material handling systems, heavy-duty conveyors, and other power transmission or rotating equipment requiring dependable load handling and resistance to overturning moments. Verified replacements and equivalents include SKF 56650D and NTN 56650D.