Timken NA43131 Double Row Tapered Roller Bearing Cone

Description:

The Timken NA43131 roller bearing cone is used in double-row tapered roller bearing assemblies that support combined radial and axial loads in heavy-duty rotating equipment. Commonly installed in industrial gearboxes, rolling mills, mining machinery, conveyors, and other material handling systems. Maintenance teams, OEMs, and system integrators use this bearing cone for replacement, equipment overhaul, and reliability-focused maintenance in demanding industrial applications.

Applications:

The Timken NA43131 roller bearing cone is designed for heavy-duty industrial applications requiring reliable support for combined radial and thrust loads. It is commonly used in mining equipment, steel processing machinery, industrial gearboxes, conveyor systems, and other rotating equipment where accurate shaft positioning, long bearing life, and dependable performance are essential.

Technical Specifications:

• Manufacturer: Timken
• Manufacturer Part Number (MPN): NA43131
• Product Type: Roller bearing cone
• Bearing Type: Double-row tapered roller bearing cone (inner ring assembly)
• Series: TNA (tapered non-adjustable double row)
• Cone Part Number: NA43131
• Design Unit: Inch
• Bore Diameter: 1.3125 in (33.338 mm)
• Outside Diameter (assembled): 3.1875 in (80.963 mm)
• Bearing Width Across Cones (T): 2.1875 in (55.562 mm)
• Outer Ring Width (C): 1.5625 in (39.688 mm)
• Cage Type: Steel cage
• Material: High-grade bearing steel
• Load Type: Combined radial and axial loads
• Dynamic Radial Load Rating (C1): 30,400 lbf (135,000 N)
• Dynamic Radial Load Rating (C90): 4,520 lbf (20,100 N)
• Dynamic Two-Row Radial Load Rating (C90-2): 7,880 lbf (35,000 N)
• Dynamic Axial Load Rating (Ca90): 5,170 lbf (23,000 N)
• Weight: Approximately 2.82 lb (1.28 kg)
• Compatible Cup: Timken 43319D double cup
• Compatible Bearing Assembly: Timken NA43131/43319D

Common Replacements:

• Timken NA43131/43319D bearing assembly
• Timken NA43131-90001 bearing assembly
• Timken 43319D double cup