National 18620 Wheel Bearing Race - Front Inner, Front Outer, Rear Inner or Rear Outer

Overview of National 18620 Wheel Bearing Race

The National 18620 wheel bearing race is a precision-engineered taper bearing cup designed for driveline and axle applications. This component is compatible with a range of luxury and performance vehicles including Aston Martin, Bentley, Jaguar, and Rolls-Royce models, ensuring reliable fitment and performance.

• Cup Bore Diameter: 3.1250 inches (79.3750 mm)
• Cup Length: 0.5313 inches (13.4950 mm)
• Cup Radius: 0.0620 inches (1.5750 mm)
• Part Type: Taper bearing cup
• Compatible with multiple classic and modern models from Aston Martin, Bentley, Jaguar, and more

Detailed Product Description

The National 18620 wheel bearing race is manufactured to meet strict dimensional tolerances, featuring a cup bore of 3.1250 inches (79.3750 mm) and a cup length of 0.5313 inches (13.4950 mm). The taper bearing cup design supports smooth rotation and load distribution within the wheel hub assembly. Its precise cup radius of 0.0620 inches (1.5750 mm) ensures proper seating and alignment with the corresponding bearing components. This part is engineered for use in driveline and axle systems, providing durability and consistent performance under various driving conditions.

Compatible Vehicles and Applications

This wheel bearing race is compatible with a variety of luxury and classic vehicles, including but not limited to:

• Aston Martin DB7, V8 Vantage, and other models
• Bentley Brooklands, Continental, Flying Spur, and Mulsanne
• Jaguar XJ6, XJ12, XJS, and related models
• Rolls-Royce Silver Dawn, Silver Shadow II, Silver Spirit, and Corniche series
• Additional fitment for Chevrolet C20 Suburban, Jeep J20, and Rover models

Common Issues Addressed by National 18620

• Eliminates wheel bearing play caused by worn or damaged bearing races
• Prevents uneven bearing wear and premature failure
• Reduces noise and vibration from the wheel hub assembly
• Restores proper bearing alignment and load distribution
• Supports safe and stable wheel rotation for improved vehicle handling

Installation Notes and Tips

• Ensure the wheel hub and bearing surfaces are clean and free of debris before installation
• Use appropriate tools to press the bearing race evenly into the hub bore to avoid damage
• Verify the cup bore dimensions match the vehicle specifications for proper fitment
• Consult the vehicle service manual for torque specifications and installation procedures
• Inspect related components such as bearings and seals during replacement for comprehensive maintenance

Quality Assurance and Warranty

National wheel bearing races are manufactured to meet industry standards for durability and precision. The 18620 part number undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against manufacturing defects to provide confidence in product reliability.