Timken HA590078 Wheel Bearing and Hub Assembly - Front

Overview of Timken HA590078 Wheel Bearing and Hub Assembly

The Timken HA590078 wheel bearing and hub assembly is engineered for reliable performance in Cadillac SRX and STS models. Designed to meet precise specifications, this driven hub assembly ensures proper fit and function for your vehicle's driveline system.

• 30 spline quantity for secure axle engagement
• 3 flange bolt holes for stable mounting
• 6 wheel studs to accommodate wheel attachment
• Wheel pilot diameter of 2.759 inches (70.10 mm) for accurate wheel alignment
• Brake pilot diameter of 2.779 inches (70.60 mm) to support brake component positioning
• Hub pilot diameter of 3.599 inches (91.42 mm) for precise hub centering
• Flange offset of 1.655 inches (42.06 mm) to maintain correct wheel positioning
• Flange diameter of 5.728 inches (145.50 mm) for compatibility with vehicle components
• Bolt circle diameter of 4.527 inches (115.00 mm) matching factory specifications

Detailed Product Description

The Timken HA590078 is a wheel bearing and hub assembly specifically designed for driven applications on Cadillac SRX and STS vehicles. This assembly features a 30-spline axle interface, ensuring a secure connection to the drivetrain. The 3-flange bolt holes and 6 wheel studs provide a robust mounting platform for wheels, supporting safe and stable operation. The precise wheel pilot diameter of 2.759 inches (70.10 mm) and brake pilot diameter of 2.779 inches (70.60 mm) help maintain proper alignment of wheels and brake components, reducing vibration and wear. Additionally, the hub pilot diameter of 3.599 inches (91.42 mm) centers the hub accurately on the axle, while the flange offset and diameter maintain correct wheel positioning relative to the suspension and brake system. The bolt circle diameter of 4.527 inches (115.00 mm) matches factory specifications, ensuring compatibility with OEM wheels and hardware.

Common Applications and Problem Resolution

• Replacement for worn or damaged wheel bearing and hub assemblies on Cadillac SRX and STS
• Eliminates wheel vibration caused by bearing wear or hub misalignment
• Resolves noise issues such as humming or grinding from the wheel area
• Restores proper wheel and brake component alignment for improved handling
• Addresses wheel stud damage or corrosion affecting wheel attachment security

Installation Notes and Tips

• Ensure vehicle is securely lifted and supported before beginning installation
• Verify spline count and bolt pattern match the vehicle’s specifications
• Clean mounting surfaces thoroughly to prevent contamination and ensure proper fit
• Torque flange bolts and wheel studs to manufacturer-recommended specifications
• Inspect related components such as axle shafts and brake parts during installation

Quality Assurance and Warranty

Timken wheel bearing and hub assemblies are manufactured to meet strict quality standards for durability and performance. The HA590078 part number undergoes rigorous testing to ensure compatibility and reliability with Cadillac SRX and STS models. This product is backed by Timken’s limited warranty against defects in materials and workmanship, providing confidence in its long-term service life.