National 30306 Wheel Bearing and Race Set

National 30306 Wheel Bearing and Race Set Overview

The National 30306 wheel bearing and race set is designed for reliable driveline performance in a variety of vehicles including Acura, Toyota 4Runner, Nissan Maxima, and Honda models. This taper bearing assembly ensures precise fitment and durability for your wheel hub needs.

• Compatible bore diameter of 1.1811 inches (30 mm)
• Outside diameter measures 2.8346 inches (72 mm)
• Cone length of 0.7480 inches (19 mm) with a cone radius of 0.0800 inches (2.032 mm)
• Cup length of 0.6299 inches (16 mm) and cup radius of 0.0800 inches (2.032 mm)
• Width of 0.8169 inches (20.75 mm) and standout of 0.1673 inches (4.25 mm)
• ISO metric design with TS type taper bearing

Technical Specifications and Design Details

The National 30306 wheel bearing and race set features an ISO metric design tailored for taper bearing assemblies. The cone and cup components are engineered with precise dimensions to ensure optimal load distribution and smooth rotation. With a bore size of 30 mm and an outside diameter of 72 mm, this bearing set fits a wide range of driveline applications. The cone length and radius, along with the cup length and radius, are designed to maintain proper alignment and reduce wear under typical driving conditions.

Compatible Vehicles and Applications

This wheel bearing and race set is compatible with multiple makes and models, including but not limited to Acura, Toyota 4Runner, Nissan Maxima, Honda Accord, and Hyundai vehicles. It is suitable for models such as the 200SX, Altima, Celica, and Grand Vitara, among others. The part number 30306 is specifically designed to meet the requirements of these vehicles’ driveline and axle systems.

Common Issues Addressed by National 30306 Wheel Bearing Set

• Eliminates wheel hub noise caused by worn bearings
• Prevents uneven tire wear due to bearing play
• Restores smooth wheel rotation and handling stability
• Reduces vibration and steering wheel wobble
• Prevents premature bearing failure in driveline components

Installation Notes and Tips

When installing the National 30306 wheel bearing and race set, ensure the hub and spindle surfaces are clean and free of debris. Proper lubrication of the bearing surfaces is essential to prevent premature wear. Use a press or bearing driver tool to seat the cone and cup components evenly without damaging the bearing surfaces. Verify the standout measurement of 0.1673 inches (4.25 mm) to maintain correct preload and alignment. Follow vehicle-specific torque specifications for axle nuts and retainers.

Quality Assurance and Warranty Information

National wheel bearings are manufactured to meet industry standards for durability and performance. The 30306 bearing set 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.