The Timken Company 57786 Tapered Roller Bearing Set

Description:

The Timken 57786 tapered roller bearing set with 553SA cup and 558S cone is a matched single row tapered roller bearing assembly designed to support combined radial and axial loads in heavy-duty rotating equipment. Commonly installed in industrial gearboxes, mining equipment, construction machinery, heavy-duty trailers, and power transmission systems where precise shaft alignment and high load capacity are required. Maintenance teams, OEMs, and system integrators use this bearing set for equipment repairs, bearing replacements, retrofit projects, and preventive maintenance to ensure reliable long-term performance.

Applications:

The Timken 57786 bearing set combines the 558S cone and 553SA cup to provide dependable performance in demanding industrial and mobile equipment. It is widely used in wheel-end assemblies, heavy-duty axles, industrial drives, conveyors, material handling equipment, and other rotating machinery where accurate load distribution, reduced friction, and extended bearing life are essential.

Technical Specifications:

• Manufacturer Part Number (MPN): 57786
• Manufacturer: Timken
• Product Type: Tapered Roller Bearing Set
• Bearing Type: Single Row Tapered Roller Bearing (TS)
• Cone Part Number: 558S
• Cup Part Number: 553SA
• Series: 555 Series
• Design Units: Inch (Imperial)
• Cage Material: Stamped Steel
• Bore Diameter (d): 2.3617 in (59.987 mm)
• Cup Outside Diameter (D): 5.1159 in (129.944 mm)
• Cone Width (B): 1.4440 in (36.678 mm)
• Cup Width (C): 1.1875 in (30.163 mm)
• Bearing Width (T): 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, power transmission systems

Common Replacements:

• Timken 558S-553SA
• SKF 558S/553SA
• NTN 558S/553SA