Timken 366-363D Tapered Roller Bearing Assembly

The Timken 366-363D tapered roller bearing assembly is a double-row tapered roller bearing designed for heavy-duty rotating equipment. It is commonly installed in industrial gearboxes, rolling mills, mining equipment, construction machinery, and heavy-duty conveyors where high combined radial and axial loads are present. This open, double-row assembly uses cone 366 and cup 363D and provides bore 1.9685 in (50.000 mm), outside diameter 3.5433 in (90.000 mm), cone width 0.8750 in (22.225 mm), double cup width 1.6563 in (42.070 mm), and overall width 1.9688 in (50.008 mm). The manufacturer part number is 366-363D (Timken) and the bearing type is double-row tapered roller bearing (TDO); it is used for equipment repair, bearing replacement, and drivetrain retrofits to improve reliability and service life.