SKF UJ391 Universal Joint

Overview of SKF UJ391 Universal Joint for Nissan Vehicles

The SKF UJ391 universal joint is engineered to provide reliable driveline performance for Nissan models including the 510, 720, and D21. Designed with precision, this universal joint ensures smooth power transfer and durability in demanding driving conditions.

• Compatible with Nissan 510, 720, and D21 models
• Features (4) grooved round bearing caps for secure fitment
• Utilizes UJ type bearing for optimal driveline articulation
• Bearing cap axis diameter measures 0.985 inches for precise alignment
• Durable construction designed to withstand driveline stresses

Detailed Product Description and Attributes

The SKF UJ391 universal joint is a critical component in the driveline and axles category, specifically designed as a drive shaft universal joint. It incorporates four grooved round bearing caps that provide a secure and stable connection, reducing the risk of slippage or misalignment during operation. The bearing type is classified as UJ, which is standard for universal joints requiring smooth rotational movement and flexibility. The bearing cap axis diameter of 0.985 inches ensures compatibility with the corresponding drive shaft components, maintaining proper fit and function. This part number UJ391 is manufactured by SKF, a recognized brand in automotive driveline components, ensuring consistent quality and performance.

Applications and Problem Solving

• Replaces worn or damaged universal joints in Nissan 510, 720, and D21 drive shafts
• Addresses driveline vibrations caused by faulty or loose universal joints
• Prevents drivetrain binding and uneven power transfer
• Eliminates noise and play in the drive shaft assembly
• Restores proper driveline articulation for improved vehicle handling

Installation Notes and Tips

When installing the SKF UJ391 universal joint, ensure the bearing caps are properly aligned with the grooved round design to secure the joint firmly. Verify the bearing cap axis diameter matches the drive shaft specifications to avoid fitment issues. It is recommended to inspect the drive shaft yokes and related components for wear before installation. Proper lubrication and torque specifications should be followed according to Nissan service guidelines for the 510, 720, and D21 models to ensure optimal performance and longevity.

Quality Assurance and Warranty

SKF manufactures the UJ391 universal joint under strict quality control standards to meet OEM specifications. The part is designed for durability and consistent performance in Nissan driveline applications. While specific warranty details may vary, SKF typically offers coverage against manufacturing defects, providing confidence in the reliability of this universal joint for Nissan 510, 720, and D21 vehicles.