National 12580 Wheel Bearing - Front Outer

National 12580 Wheel Bearing Cone Overview

The National 12580 wheel bearing cone is a precision-engineered taper bearing cone designed for driveline and axle applications. With exact dimensions including a cone bore of 0.8125 inches (20.638 mm) and a cone length of 0.7813 inches (19.845 mm), this component ensures reliable fitment and performance in compatible vehicles such as Ford F-150 and Chevrolet Silverado models.

• Brand: National
• Part Number: 12580
• Category: Wheel Bearings, Seals, and Related Components
• Cone Bore: 0.8125 inch (20.638 mm)
• Cone Length: 0.7813 inch (19.845 mm)
• Cone Radius: 0.0620 inch (1.575 mm)
• Part Description: Taper bearing cone

Technical Specifications and Design Details

The National 12580 wheel bearing cone features a taper bearing design optimized for axle and driveline assemblies requiring precise dimensional tolerances. The cone bore diameter of 0.8125 inches (20.638 mm) allows for a secure fit on the axle shaft, while the cone length of 0.7813 inches (19.845 mm) provides adequate surface contact for load distribution. The cone radius of 0.0620 inches (1.575 mm) supports smooth rotation and reduces wear over time. These specifications make the 12580 suitable for use in medium to heavy-duty trucks, including Ford F-150 and Chevrolet Silverado models, where reliable wheel bearing performance is critical.

Applications and Problem Solving

• Replacement for worn or damaged wheel bearing cones in Ford F-150 and Chevrolet Silverado vehicles
• Addresses wheel noise and vibration caused by bearing wear
• Prevents premature axle shaft damage due to improper bearing fit
• Restores proper wheel alignment and rotation smoothness
• Helps maintain driveline integrity under heavy load conditions

Installation Notes and Tips

When installing the National 12580 wheel bearing cone, ensure the axle shaft and bearing surfaces are clean and free of debris. Use appropriate bearing grease and torque specifications as outlined in the vehicle service manual. Proper seating of the cone is essential to avoid premature wear or failure. It is recommended to inspect related components such as seals and races during installation to ensure overall driveline reliability.

Quality Assurance and Warranty

National wheel bearing components are manufactured to meet industry standards for durability and precision. The 12580 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 support long-term vehicle performance.