Timken 17580/17520 Tapered Roller Bearing Cup and Cone

The Timken 17580/17520 tapered roller bearing assembly provides precise shaft alignment and reliable rotational performance while supporting combined radial and axial loads in wheel hubs, trailer axles, industrial gearboxes, and agricultural equipment. This single-row TS-design bearing consists of the Timken 17580 bearing cone and 17520 bearing cup, forming a complete assembly suitable for Harley‑Davidson motorcycles as well. Key dimensions include bore 0.6250 in (15.875 mm), outside diameter 1.6875 in (42.863 mm), overall width 0.6563 in (16.670 mm) with cone width 0.6563 in and cup width 0.5313 in; dynamic radial load rating 7,070 lbf (31,400 N) and static radial load rating 6,560 lbf (29,200 N). Weight is approximately 0.30 lb (0.10 kg); design units are Imperial, and the assembly replaces Harley-Davidson OEM 47550-74, with common replacements SKF 17580/17520, NTN 17580/17520, and KOYO 17580/17520.