Timken 52400/52637D Double Tapered Roller Bearing

The Timken 52400/52637D Double Tapered Roller Bearing is a TDO (Tapered Double Outer) bearing assembly that pairs the 52400 cone with the 52637D double cup to deliver high load capacity and precise shaft positioning for heavy‑duty power transmission. Designed to support heavy combined radial and axial loads, its double‑row configuration provides a wide effective bearing spread suitable for fixed or floating mounting in demanding equipment such as rolling mills, industrial gearboxes, mining and aggregate machinery, construction machinery, and other power transmission systems. Key specifications include: MPN 52400/52637D; Series 52000; Design Units: Inch; Cage Material: Stamped Steel; Bore 4.0000 in (101.600 mm); Outside Diameter 6.3750 in (161.925 mm); Overall Width 3.2498 in (82.545 mm); Cone Width 1.4219 in (36.116 mm); Double Cup Width 2.4375 in (61.913 mm); Dynamic Radial Load Rating (C1) 87,500 lbf (389,000 N); Dynamic Radial Load Rating (C90) 13,000 lbf (57,900 N); Two‑Row Dynamic Radial Load Rating (C90) 22,700 lbf (101,000 N); Dynamic Axial Load Rating (Ca90) 10,600 lbf (47,100 N); Maximum Shaft Fillet Radius 0.140 in (3.600 mm); Maximum Housing Fillet Radius 0.030 in (0.800 mm); Shaft Backing Shoulder Diameter db 4.69 in (119 mm); Housing Backing Shoulder Diameter Da 6.08 in (153.92 mm); Effective Center Location −0.02 in (−0.5 mm); Geometry Factor Cg 0.152; K Factor 1.23; e Factor 0.47; Y1 Factor 1.42; Y2 Factor 2.12; Weight 12.70 lb (5.76 kg). Typical applications include rolling mills, industrial gearboxes, mining equipment, construction machinery, and heavy‑duty power transmission systems. Common replacements: SKF equivalents TDO Tapered Roller Bearing Assembly; NTN equivalents TDO Tapered Roller Bearing Assembly; Timken 52393/52637D.