Timken 55433D Tapered Roller Bearing Cup Assembly

The Timken 55433D Double Cup is a TDO (Tapered Double Outer) tapered roller bearing cup designed for use with compatible Timken cones to support heavy combined radial and axial loads. It is a 55000C Series double cup with an outside diameter of 4.3300 in (109.982 mm) and a double cup width of 1.6876 in (42.865 mm). The maximum housing fillet radius is 0.020 in (0.50 mm) and the housing backing shoulder diameter (Da) is 4.15 in (105.40 mm). Designed for TDO bearing assemblies, it is commonly paired with Timken cones such as 55194, 55200, 55206C, and other matching 55000 Series cones. Key metrics include ISO e factor 0.88, K factor 0.66, Y1 0.76, Y2 1.14, and a geometry factor Cg of 0.120. Typical applications include rolling mills, industrial gearboxes, mining equipment, construction machinery, paper mills, and heavy-duty power transmission systems. Common replacements include SKF equivalent TDO double cup and NTN equivalent, as well as Timken 55194/55433D bearing assemblies.