Timken 3659 Tapered Roller Bearing Cone And Cup Set

The Timken 3659 cone with 3620B cup is a single‑row tapered roller bearing assembly (3600 series) designed for heavy‑duty rotating equipment and industrial power transmission. It features a bore of 0.9375 in (23.813 mm), outside diameter of 2.4375 in (61.913 mm), and an overall width of 0.3750 in (9.525 mm), with a cone width of 1.1975 in (30.417 mm) and a cup width of 0.9375 in (23.813 mm); the cup flange outside diameter is 2.6209 in (66.571 mm) and the flange width is 0.1875 in (4.763 mm). The assembly uses a stamped steel cage and weighs 1.0 lb (0.46 kg). It is commonly used in industrial gearboxes, conveyor drives, mining, agricultural, and construction equipment, as well as heavy‑duty axles where combined radial and axial loads must be supported. MPN 3659 / 3620B; Common replacements include SKF 3659/3620B, NTN 3659/3620B, and KOYO 3659/3620B.