The Timken Company 52637D Double Roller Bearing Cup

The Timken 52637D Double Outer Cup (TDO) for a tapered roller bearing assembly delivers a wide effective bearing spread to resist heavy radial and axial loads and overturning moments in demanding industrial rotating equipment. Used with Timken tapered roller bearing cones in TDO assemblies, it supports rolling mills, industrial gearboxes, mining equipment, construction machinery, and paper processing machinery where high load capacity and precise alignment matter. Key specifications include outside diameter 6.3750 in (161.925 mm), double cup width 2.4375 in (61.913 mm), and weight 12.67 lb (5.745 kg); housing backing shoulder diameter (Da) 6.08 in (153.92 mm); maximum housing fillet radius 0.030 in (0.800 mm). It is part of Timken’s 52000 series and compatible with cones such as 52387, 52393, 52394X, and 52400A; part number 52637D, bearing type Double Outer Cup (TDO), design units: inch.