National 09078 Wheel Bearing - Front Outer

National 09078 Wheel Bearing Cone Overview

The National 09078 wheel bearing cone is a precision-engineered taper bearing cone designed for driveline and axle applications. With exact dimensions including a 0.7500 inch (19.05 mm) cone bore and a 0.8480 inch (21.539 mm) cone length, this component ensures reliable fitment and performance in compatible vehicles.

• Brand: National
• Part Number: 09078
• Category: Wheel Bearings, Seals, and Related Components
• Cone Bore Diameter: 0.7500 inch (19.05 mm)
• Cone Length: 0.8480 inch (21.539 mm)
• Cone Radius: 0.0460 inch (1.168 mm)
• Part Description: Taper bearing cone

Technical Specifications and Features

The National 09078 wheel bearing cone features a taper bearing design optimized for axle and driveline assemblies. The 0.7500 inch cone bore diameter and 0.8480 inch cone length provide a precise fit for compatible hub assemblies. The 0.0460 inch cone radius supports smooth rotation and load distribution, reducing wear and extending service life. Manufactured to meet OEM standards, this bearing cone is suitable for vehicles requiring exact dimensional tolerances.

Applications and Vehicle Compatibility

This wheel bearing cone is compatible with a range of vehicles that utilize taper bearing cones with similar dimensions. It is commonly used in driveline and axle assemblies for makes such as Ford, Chevrolet, and Dodge, among others. The National 09078 part number corresponds to specific fitments where a 0.7500 inch bore and 0.8480 inch length bearing cone is required. Always verify fitment with your vehicle’s service manual or parts catalog to ensure compatibility.

Common Issues Addressed by National 09078

• Eliminates wheel bearing noise caused by worn or damaged cones
• Prevents premature bearing failure due to improper fit or wear
• Restores proper bearing preload and axle alignment
• Reduces vibration and uneven tire wear related to bearing issues
• Supports safe and smooth wheel rotation under load

Installation Notes and Tips

When installing the National 09078 wheel bearing cone, ensure the bearing surfaces are clean and free of debris. Use proper tools to press the cone into the hub assembly without damaging the bearing surfaces. Verify the cone bore and length dimensions match the original equipment specifications. Apply the recommended lubricant and torque specifications as outlined in the vehicle’s service manual. Proper installation is critical to avoid premature wear and ensure optimal performance.

Quality Assurance and Warranty

National manufactures the 09078 wheel bearing cone to meet stringent quality standards, ensuring durability and reliable performance. While specific warranty details may vary, National products typically come with a limited warranty against defects in materials and workmanship. Consult the product documentation or National’s official resources for exact warranty terms.