National 511028 Wheel Bearing - Rear

Overview of National 511028 Wheel Bearing for Lexus Models

The National 511028 wheel bearing is engineered for reliable driveline performance in select Lexus vehicles. Designed as a double row angular contact bearing, it supports smooth wheel rotation and durability for models including the Lexus GS300, GS400, GS430, IS300, and SC430.

• Double row angular contact design for enhanced load capacity
• Precision bore diameter of 1.929 inches (49 mm)
• Outer race diameter of 3.307 inches (84 mm) with 1.969 inches (50 mm) width
• Inner race width and bore matching at 1.969 inches (50 mm) and 1.929 inches (49 mm)
• Compatible with Lexus GS and IS series, as well as SC430 models

Technical Specifications and Design Details

The National 511028 wheel bearing features a double row angular contact design, which provides increased radial and axial load support compared to single row bearings. The inner race bore measures 1.929 inches (49 mm) with a radius of 0.138 inches (3.5 mm), ensuring a precise fit on the axle shaft. Both the inner and outer races have a width of 1.969 inches (50 mm), contributing to the bearing's stability and longevity. The outer race outside diameter is 3.307 inches (84 mm), matching the required dimensions for proper installation in the specified Lexus models.

Compatible Lexus Models and Applications

This wheel bearing is compatible with the following Lexus vehicles:

• Lexus GS300
• Lexus GS400
• Lexus GS430
• Lexus IS300
• Lexus SC430

It is designed to replace worn or damaged wheel bearings in these models, maintaining proper wheel alignment and smooth rotation under various driving conditions.

Common Issues Addressed by National 511028 Wheel Bearing

• Eliminates wheel noise caused by worn bearings
• Prevents uneven tire wear due to bearing play
• Reduces vibration and steering instability
• Restores proper wheel hub alignment
• Improves overall driveline reliability and safety

Installation Notes and Tips

When installing the National 511028 wheel bearing, ensure the hub and spindle surfaces are clean and free of debris. Proper torque specifications should be followed to avoid premature bearing failure. It is recommended to inspect related components such as seals and axle shafts during installation. Using the correct tools for bearing press-fit installation will help maintain the integrity of the bearing and vehicle safety.

Quality Assurance and Warranty Information

National wheel bearings are manufactured to meet OEM standards for fit, form, and function. The 511028 part number is part of the Rwdb series and Type E-3 classification, indicating its design and performance criteria. While specific warranty details may vary, National typically offers coverage against defects in materials and workmanship to ensure product reliability for Lexus GS300, GS400, GS430, IS300, and SC430 owners.