Timken 495A-90030 Double-Row Tapered Roller Bearing

Description:

The Timken 495A-90030 Tapered Roller Bearing TDO is a double-row tapered roller bearing assembly designed to support heavy combined radial and axial loads while providing exceptional rigidity in demanding rotating equipment. It is commonly installed in industrial gearboxes, rolling mills, mining equipment, paper processing machinery, construction equipment, and heavy-duty power transmission systems. Maintenance teams, OEMs, and industrial repair specialists use this bearing assembly for equipment replacement, rebuilds, retrofits, and preventive maintenance to maximize reliability and extend service life.

Applications:

The Timken 495A-90030 Tapered Roller Bearing TDO is engineered for applications requiring high load capacity, excellent resistance to overturning moments, and precise shaft positioning. Its TDO (Tapered Double Outer) configuration provides a wide effective bearing spread, making it suitable for rolling mills, industrial gearboxes, mining and aggregate equipment, construction machinery, heavy-duty conveyors, and power transmission systems where durability and dependable performance are critical.

Technical Specifications:

• Manufacturer Part Number (MPN): 495A-90030
• Manufacturer: Timken
• Product Type: Tapered Roller Bearing Assembly
• Bearing Type: TDO (Tapered Double Outer)
• Cone Part Number: 495A
• Cup Part Number: 493D
• Series: 495
• Design Units: Inch
• Cage Material: Stamped Steel
• Bore Diameter (d): 3.000 in (76.200 mm)
• Outside Diameter (D): 5.3750 in (136.525 mm)
• Cone Width (B): 1.1720 in (29.769 mm)
• Double Cup Width (C): 2.1250 in (53.975 mm)
• Overall Bearing Width (T): 2.7500 in (69.850 mm)
• Maximum Shaft Fillet Radius: 0.140 in (3.600 mm)
• Maximum Housing Fillet Radius: 0.030 in (0.800 mm)
• Shaft Backing Shoulder Diameter (db): 3.620 in (92.000 mm)
• Housing Backing Shoulder Diameter (Da): 5.160 in (130.050 mm)
• Dynamic Radial Load Rating (C90): 9,000 lbf (40,000 N)
• Dynamic Radial Load Rating (Two-Row C1): 60,500 lbf (269,000 N)
• Dynamic Radial Load Rating (Two-Row C90): 15,700 lbf (69,700 N)
• Dynamic Axial Load Rating (Ca90): 6,850 lbf (30,500 N)
• Typical Applications: Rolling Mills, Industrial Gearboxes, Mining Equipment, Construction Machinery, Heavy-Duty Power Transmission Systems

Common Replacements:

• SKF Equivalent TDO Tapered Roller Bearing
• NTN Equivalent TDO Tapered Roller Bearing
• Timken 495A-90029