Timken LM522549-90053 Precision Tapered Roller Bearing

The Timken LM522549-90053 precision TDO double outer tapered roller bearing assembly is a factory-assembled matched unit consisting of two LM522549 cones and a LM522510D double cup, designed to provide controlled internal clearance and to support heavy combined radial and axial loads. Manufacturer Timken identifies this as a double-row TDO assembly in the LM522500 series with design series TDO, and the part is catalogued under MPN LM522549-90053. Commonly installed in industrial gearboxes, conveyors, mining and aggregate equipment, construction machinery, agricultural equipment, and power transmission systems, this assembly delivers shaft rigidity, precise alignment, and long service life in demanding applications. It handles heavy loads with a dynamic rating of 52,200 lbf (232,000 N), a static rating of 80,300 lbf (357,000 N), and a dynamic axial rating of 9,300 lbf (41,400 N). Key dimensions include bore 4.3302 in (109.987 mm), outside diameter 6.2987 in (159.987 mm), and width 2.9375 in (74.613 mm); cone width 1.3750 in (34.925 mm) and double cup width 2.3125 in (58.738 mm). The assembly weighs approximately 20.8 lb (9.4 kg) and uses a stamped steel cage with high-grade bearing steel. Compatibility is limited to two Timken LM522549 cones with the LM522510D double cup only. Common replacements include Timken LM522549-90053 bearing assembly and Timken LM522549/LM522510D TDO assembly; SKF equivalent TDO bearing is listed as a reference.