National HM212011 Wheel Bearing Race - Front Inner

National HM212011 Wheel Bearing Race Overview

The National HM212011 is a precision-engineered taper bearing cup designed for driveline and axle applications. With exact dimensions including a 4.8130 inch (122.25 mm) cup bore and a 1.1700 inch (29.718 mm) cup length, this wheel bearing race ensures proper fit and reliable performance in compatible vehicles.

• Brand: National
• Part Number: HM212011
• Category: Wheel Bearing Race (Taper Bearing Cup)
• Cup Bore Diameter: 4.8130 inches (122.25 mm)
• Cup Length: 1.1700 inches (29.718 mm)
• Cup Radius: 0.1300 inches (3.302 mm)

Detailed Specifications and Features

The National HM212011 wheel bearing race is manufactured to meet strict tolerances for cup bore, length, and radius, ensuring a precise fit within the hub assembly. The taper bearing cup design supports axial and radial loads, which is critical for maintaining wheel alignment and smooth rotation. The 4.8130 inch cup bore diameter and 1.1700 inch cup length are engineered to match specific axle and driveline configurations, making this part suitable for various vehicle makes and models requiring these dimensions.

Compatible Vehicles and Applications

This wheel bearing race is compatible with a range of vehicles that require a taper bearing cup with a 4.8130 inch bore and 1.1700 inch length. It is commonly used in automotive driveline and axle assemblies where reliable wheel bearing support is essential. Typical applications include:

• Replacement of worn or damaged wheel bearing races
• Restoration of axle hub assemblies in trucks and SUVs
• Maintenance of driveline components to prevent wheel vibration
• Addressing wheel bearing noise or roughness issues
• Ensuring proper bearing preload and alignment

Installation Notes and Tips

When installing the National HM212011 wheel bearing race, ensure the hub and spindle surfaces are clean and free of debris. Use appropriate tools to press the taper bearing cup evenly into the hub bore to avoid damage. Verify the cup bore and length dimensions match the vehicle specifications before installation. Proper installation is critical to prevent premature bearing wear and maintain driveline integrity.

Quality Assurance and Warranty

National manufactures the HM212011 wheel bearing race to meet industry standards for durability and performance. While specific warranty details are not provided, National products typically undergo rigorous quality control to ensure reliability in automotive applications. Using genuine National parts helps maintain vehicle safety and driveline function.