Timken HA590259K Wheel Bearing and Hub Assembly - Rear

Timken HA590259K Wheel Bearing and Hub Assembly Overview

The Timken HA590259K wheel bearing and hub assembly is designed for reliable performance in Ford and Mercury vehicles, including the Explorer, Explorer Sport Trac, and Mountaineer models. This non-driven hub assembly features precise dimensions to ensure proper fit and function.

• Wheel pilot diameter: 2.774 inches (70.47 mm)
• Brake pilot diameter: 3.224 inches (81.9 mm)
• Wheel stud quantity: 5
• Flange diameter: 6.299 inches (160 mm)
• Bolt circle diameter: 4.488 inches (114 mm)
• Drive type: Non-driven

Technical Specifications and Compatibility

The HA590259K wheel bearing and hub assembly is engineered to meet the exact specifications required for select Ford and Mercury vehicles. With a wheel pilot diameter of 2.774 inches and a brake pilot diameter of 3.224 inches, this assembly ensures proper alignment and secure mounting of the wheel and brake components. The 5-lug wheel stud configuration and 114 mm bolt circle diameter provide compatibility with the wheel designs used on the Explorer, Explorer Sport Trac, and Mountaineer. The flange diameter of 6.299 inches supports a stable connection to the vehicle’s suspension system. This assembly is designed for non-driven applications, making it suitable for front or rear hubs depending on the vehicle configuration.

Applications and Problem Resolution

This Timken wheel bearing and hub assembly is used to replace worn or damaged hubs on compatible Ford and Mercury models. It addresses several common issues:

• Eliminates wheel bearing noise caused by wear or contamination
• Restores proper wheel alignment and reduces vibration
• Prevents premature brake rotor wear by maintaining correct brake pilot diameter
• Ensures secure wheel mounting with the correct stud quantity and bolt pattern
• Improves overall driveline stability in non-driven axle positions

Installation Notes and Tips

When installing the Timken HA590259K assembly, ensure the hub is properly seated on the spindle and that the wheel pilot diameter matches the wheel hub bore. Use a calibrated torque wrench to tighten lug nuts to manufacturer specifications to avoid warping brake components. Verify the flange diameter and bolt circle diameter align with the vehicle’s suspension and wheel assembly. It is recommended to inspect related components such as wheel studs and brake rotors during installation for wear or damage.

Quality Assurance and Warranty

Timken manufactures the HA590259K wheel bearing and hub assembly to meet stringent quality standards. Each unit undergoes rigorous testing to ensure durability and performance under normal operating conditions. While specific warranty details may vary, Timken typically offers a limited warranty covering defects in materials and workmanship. Refer to Timken’s official documentation for complete warranty information.