National 306 Transfer Case Output Shaft Bearing

Overview of National Transfer Case Output Shaft Bearing 306

The National 306 transfer case output shaft bearing is engineered for reliable performance in a variety of vehicles including Acura, Dodge, Ford, Honda, and Toyota models. Designed as a single row radial ball bearing, it supports smooth rotation and durability in transfer case applications.

• Single row radial ball bearing design
• Inner race bore diameter: 1.181 inches (30.000 mm)
• Outer race outside diameter: 2.835 inches (72.000 mm)
• Width: 0.748 inches (19.000 mm)
• Compatible with multiple makes and models including Jeep Cherokee, Nissan Pathfinder, and Volkswagen Beetle

Technical Specifications and Design Features

The National 306 bearing features a precise inner race radius of 0.040 inches (1.020 mm) and an outer race radius of the same dimension, ensuring consistent load distribution and reduced wear. The bearing’s 300 series classification and A-1 type design provide a balance of strength and smooth operation. With a bore size of 1.181 inches, this bearing fits transfer case output shafts requiring a 30 mm inner diameter. The 0.748 inch width supports axial and radial loads effectively, making it suitable for demanding transfer case environments.

Compatible Vehicles and Applications

This transfer case output shaft bearing is compatible with a wide range of vehicles, including but not limited to the Ford Explorer Sport Trac, Honda Passport, Mitsubishi Montero Sport, and Toyota Land Cruiser. It is designed to replace worn or damaged bearings in transfer cases of models such as the Nissan 240SX, Jeep Wagoneer, and Volkswagen Beetle, ensuring continued drivetrain reliability.

Common Issues Addressed by National 306 Bearing

• Eliminates transfer case noise caused by worn bearings
• Prevents excessive shaft play and vibration
• Reduces risk of transfer case output shaft damage
• Improves drivetrain smoothness and efficiency
• Restores proper bearing fit and alignment

Installation Notes and Tips

Ensure the transfer case output shaft and housing are clean and free of debris before installation. Use appropriate bearing press tools to avoid damage to the bearing races. Verify the bearing orientation matches OEM specifications. Lubricate the bearing with recommended grease or oil to maintain optimal performance. After installation, check for smooth rotation and absence of play.

Quality Assurance and Warranty

National bearings are manufactured to meet industry standards for durability and precision. The 306 transfer case output shaft bearing undergoes rigorous quality control to ensure consistent dimensions and performance. While specific warranty details may vary, National typically offers coverage against manufacturing defects to support long-term reliability in automotive applications.