National 39250 Wheel Bearing - Rear Outer

National 39250 Wheel Bearing Cone Overview

The National 39250 wheel bearing cone is a precision-engineered taper bearing cone designed to meet the demanding requirements of driveline and axle assemblies. With exact dimensions including a 2.5-inch (63.5 mm) cone bore and a 0.8661-inch (22 mm) cone length, this component ensures reliable fitment and performance for compatible vehicle models.

• Cone bore diameter: 2.5000 inches (63.5 mm)
• Cone length: 0.8661 inches (22 mm)
• Cone radius: 0.0799 inches (2.03 mm)
• Part type: Taper bearing cone
• Part number: 39250 by National

Detailed Specifications and Design

The National 39250 wheel bearing cone is manufactured to precise tolerances to provide optimal contact and load distribution within the wheel bearing assembly. The 2.5-inch bore diameter and 0.8661-inch length are critical for ensuring proper seating and rotation in compatible driveline systems. The taper bearing cone design supports axial and radial loads, contributing to smooth wheel operation and extended component life. This part is suitable for vehicles requiring a cone bore of 63.5 mm and a cone length of 22 mm, commonly found in various makes and models.

Applications and Problem Resolution

• Replacement for worn or damaged wheel bearing cones in driveline assemblies
• Addresses wheel noise caused by bearing wear or improper fit
• Helps eliminate wheel vibration due to bearing cone deformation
• Prevents premature bearing failure by restoring correct bearing geometry
• Supports safe and stable wheel rotation under load

Installation Notes and Tips

When installing the National 39250 wheel bearing cone, ensure the cone bore and length match the vehicle’s specifications exactly. Proper cleaning of the bearing housing and lubrication of the cone surface are essential for optimal performance. Use appropriate tools to avoid damage to the cone radius and maintain the integrity of the taper surface. Verify fitment compatibility with the vehicle’s make and model before installation.

Quality Assurance and Warranty

National manufactures the 39250 wheel bearing cone to meet industry standards for durability and precision. While specific warranty details are not provided, National products typically undergo rigorous quality control to ensure reliable performance in automotive driveline applications.