Timken 45290 Single Cone Tapered Roller Bearing

Timken 45290 single cone tapered roller bearing is a precision inner-ring cone designed to pair with Timken bearing cups in heavy-duty gearboxes, transmissions, wheel hubs, axles, and industrial power transmission applications. As a single-row tapered roller bearing cone, it supports combined radial and axial loads while helping maintain precise shaft alignment, low friction, and long service life. The part is manufactured from high-carbon chromium bearing steel and uses a stamped steel cage. Key specifications include bore 2.2500 in (57.150 mm); cone width 1.2188 in (30.958 mm); weight 2.5 lb (1.10 kg); Series 45200; MPN 45290; bearing type single cone (TS); cone part number 45290; maximum shaft fillet radius 0.090 in (2.300 mm). Dynamic radial load rating (C1) 34,500 lbf (153,000 N); static radial load rating (C0) 42,600 lbf (189,000 N); dynamic thrust rating (Ca90) 5,090 lbf (22,600 N). Dimensional features include shaft backing shoulder diameters da 2.600 in (66.000 mm) and db 2.760 in (70.000 mm), with an effective center location of −0.320 in (−8.100 mm). The bearing is designed to pair with compatible Timken cups such as 45220, 45221, or 45220-B, and is commonly replaced by SKF 45290, NTN 45290, or Koyo 45290. Applications span gearboxes, transmissions, wheel hubs, axles, agricultural equipment, construction machinery, mining equipment, and industrial power transmission systems.