National 3780 Transfer Case Output Shaft Bearing - Front Outer, Rear Inner or Rear Outer

Overview of National Transfer Case Output Shaft Bearing 3780

The National 3780 transfer case output shaft bearing is engineered for reliable performance in Hummer H1 vehicles. This taper bearing cone is designed to meet precise specifications, ensuring smooth operation and durability in demanding transfer case applications.

• Cone bore diameter: 2.0000 inches (50.8 mm)
• Cone length: 1.1930 inches (30.3020 mm)
• Cone radius: 0.1400 inches (3.5560 mm)
• Part type: Transfer case output shaft bearing (taper bearing cone)
• Compatible with Hummer H1 transfer cases

Technical Specifications and Features

The National 3780 bearing features a cone bore of exactly 2 inches (50.8 mm), providing a precise fit for the output shaft of the transfer case. Its cone length measures 1.193 inches (30.302 mm), allowing for proper seating and load distribution. The cone radius of 0.140 inches (3.556 mm) supports smooth rotation and reduces wear. This taper bearing cone is manufactured to meet OEM standards, ensuring compatibility and performance within the Hummer H1 transfer case assembly.

Application and Compatibility

This transfer case output shaft bearing is specifically compatible with the Hummer H1 model. It is designed to replace worn or damaged bearings in the transfer case output shaft, helping to maintain drivetrain efficiency and reduce noise or vibration during operation.

• Addresses transfer case output shaft bearing wear
• Reduces transfer case noise and vibration
• Prevents premature transfer case component failure
• Restores smooth transfer case operation in Hummer H1
• Supports drivetrain reliability under heavy load conditions

Installation Notes and Tips

When installing the National 3780 bearing, ensure the transfer case output shaft and bore are clean and free of debris. Proper alignment during installation is critical to avoid bearing damage. Use appropriate tools to press the bearing cone into place without applying excessive force. Verify fitment with the Hummer H1 transfer case specifications to ensure correct installation.

Quality Assurance and Warranty

National bearings are manufactured to meet industry standards for durability and precision. The 3780 transfer case output shaft bearing undergoes quality control inspections to ensure dimensional accuracy and material integrity. While specific warranty details are not provided, National products typically come with manufacturer-backed quality assurance to support reliable service life.