The Timken Company 57786 Tapered Roller Bearing Set

The Timken 57786 tapered roller bearing set pairs the 558S cone with the 553SA cup as a matched single-row TS bearing to support combined radial and axial loads in heavy-duty rotating equipment. Designed for precise shaft alignment and high load capacity, it sees wide use in industrial gearboxes, mining equipment, construction machinery, heavy-duty trailers, wheel-end assemblies, and power transmission systems where reliable load distribution and reduced friction extend bearing life. Specifications include MPN 57786; Series 555; Design units inch; Cage material stamped steel; Bore diameter 2.3617 in (59.987 mm); Cup outside diameter 5.1159 in (129.944 mm); Cone width 1.4440 in (36.678 mm); Cup width 1.1875 in (30.163 mm); Bearing width 1.5000 in (38.100 mm); e factor 0.35; Y factor 1.73; geometry factor Cg 0.111. Typical applications: industrial gearboxes, mining equipment, construction machinery, heavy-duty trailers, material handling equipment, and other rotating machinery requiring accurate load distribution. Common replacements include Timken 558S-553SA, SKF 558S/553SA, NTN 558S/553SA.