Timken 64450-64700D Tapered Roller Bearing Assembly

The Timken 64450-64700D tapered roller bearing assembly is a double outer (TDO) configuration designed to support heavy combined radial and axial loads in demanding industrial rotating equipment. Its wide bearing spread from the TDO design makes it ideal for rolling mills, industrial gearboxes, mining equipment, heavy-duty conveyors, and material handling systems where precise shaft alignment and robust load distribution are essential. Key specifications include MPN 64450-64700D, Series 64000, bore 4.5000 in (114.300 mm), cup outside diameter 7.0000 in (177.800 mm), cone width 1.6250 in (41.275 mm), double cup width 2.7500 in (69.850 mm), and bearing width across cones 3.6249 in (92.072 mm); cage material is stamped steel. Dynamic load ratings include C1 108,000 lbf (478,000 N); C90 16,000 lbf (71,200 N); 2-Row C90 27,900 lbf (124,000 N); Ca90 14,100 lbf (62,900 N). Maximum shaft fillet radius 0.140 in (3.600 mm) and maximum housing fillet radius 0.030 in (0.800 mm); shaft backing shoulder diameter db 5.16 in (131.000 mm) and housing backing shoulder diameter Da 6.81 in (172.970 mm); geometry factor Cg 0.115. Common applications include rolling mills, industrial gearboxes, mining equipment, heavy-duty conveyors, material handling systems, and power transmission systems, with maintenance use for repairs, replacements, retrofits, and preventive maintenance to maximize reliability and service life.