National 28580 Manual Transmission Input Shaft Bearing

Overview of National 28580 Manual Transmission Input Shaft Bearing

The National 28580 manual transmission input shaft bearing is engineered for reliable performance in a range of vehicles including Audi, Chevrolet, Ferrari, Ford, GMC, and Lamborghini models. Designed as a taper bearing cone, this part supports smooth transmission operation by reducing friction on the input shaft.

• Cone bore diameter: 2.0000 inches (50.8 mm)
• Cone length: 1.0000 inch (25.4 mm)
• Cone radius: 0.1400 inch (3.556 mm)
• Part type: Taper bearing cone for manual transmissions
• Compatible with multiple truck and sports car models

Technical Specifications and Attributes

The National 28580 bearing features a precise cone bore of 2 inches (50.8 mm), ensuring a secure fit on the input shaft. Its 1-inch (25.4 mm) cone length and 0.14-inch (3.556 mm) cone radius are designed to maintain optimal alignment and load distribution within the transmission assembly. This taper bearing cone is critical for reducing wear and maintaining smooth rotational movement in manual transmission systems.

Compatible Vehicles and Applications

This input shaft bearing is compatible with a variety of vehicles, including Ford F-100, F-150, F-250, F-350, and their Super Duty variants, Chevrolet Silverado 2500 HD and 3500, GMC Sierra 2500 HD and 3500, Audi R8, Ferrari Testarossa, and Lamborghini Gallardo models. The part number 28580 ensures correct identification for these specific applications.

Common Issues Addressed by National 28580 Bearing

• Excessive input shaft play causing gear misalignment
• Noise or roughness during manual transmission operation
• Premature bearing wear due to improper fit or lubrication
• Transmission input shaft vibration or instability
• Reduced transmission efficiency and increased friction

Installation Notes and Tips

When installing the National 28580 bearing, ensure the cone bore matches the input shaft diameter precisely to avoid misalignment. Proper lubrication is essential to extend bearing life and maintain smooth operation. Use appropriate tools to press the bearing into place without damaging the cone surface. Verify fitment compatibility with the vehicle’s manual transmission model before installation.

Quality Assurance and Warranty

National bearings are manufactured to meet industry standards for durability and performance. The 28580 manual transmission input shaft bearing undergoes rigorous quality control to ensure dimensional accuracy and material integrity. Please consult National’s warranty policy for specific coverage details related to this part.