National A-7 Wheel Bearing and Race Set - Rear or Rear Outer

National A-7 Wheel Bearing and Race Set Overview

The National A-7 wheel bearing and race set is engineered for reliable driveline performance in select Chevrolet, Chrysler, Dodge, Ford, and GMC vehicles. Designed as a taper bearing set, it includes both cone and cup components with precise dimensions to ensure proper fit and function.

• Taper bearing cone bore diameter: 1.5630 inches (39.7 mm)
• Cone length: 0.8700 inches (22.098 mm)
• Cone radius: 0.0300 inches (0.762 mm)
• Cup bore diameter: 2.8750 inches (73.025 mm)
• Cup length: 0.8400 inches (21.336 mm)
• Cup radius: 0.0900 inches (2.286 mm)
• Overall width: 1.0100 inches (25.654 mm)
• Includes lock ring R-210047 for secure installation

Detailed Product Description and Specifications

The National A-7 wheel bearing and race set features a taper bearing cone (M201047S) and cup (M201011) designed to meet OEM specifications. The cone bore diameter of 1.5630 inches (39.7 mm) and cup bore diameter of 2.8750 inches (73.025 mm) provide a precise fit for axle shafts and hubs. The cone and cup lengths, 0.8700 inches (22.098 mm) and 0.8400 inches (21.336 mm) respectively, ensure proper seating and load distribution. The included lock ring R-210047 secures the assembly, maintaining bearing position under operating conditions. This set is suitable for use in various driveline applications requiring taper bearing sets with these exact dimensions.

Compatible Vehicles and Applications

This wheel bearing and race set is compatible with a range of Chevrolet, Chrysler, Dodge, Ford, and GMC models, including but not limited to Chevrolet Blazer, C10 Suburban, and K10 Suburban; Chrysler 300, Imperial, Monaco, Newport, New Yorker; Dodge B100, B200, Challenger, Charger, Dart, Ramcharger; Ford F-100, F-150; and GMC Jimmy, D100, D150, W100, W150, Town & Country. The National A-7 part number is designed to meet the specific fitment requirements of these vehicles, ensuring proper driveline performance and durability.

Common Issues Addressed by the National A-7 Bearing Set

• Eliminates wheel bearing noise caused by worn or damaged bearings
• Prevents axle shaft play and vibration due to bearing wear
• Restores proper hub rotation and reduces heat buildup
• Addresses premature bearing failure from improper fit or contamination
• Ensures secure bearing retention with included lock ring

Installation Notes and Tips

• Verify vehicle compatibility with the National A-7 part number before installation
• Clean hub and spindle surfaces thoroughly to remove debris and corrosion
• Use proper tools to press the cone and cup components without damage
• Install the included lock ring R-210047 to secure the bearing assembly
• Check bearing preload and adjust as necessary according to vehicle service manual

Quality Assurance and Warranty Information

National wheel bearing and race sets are manufactured to meet industry standards for durability and performance. The A-7 set undergoes rigorous quality control to ensure dimensional accuracy and material integrity. While specific warranty details may vary, National typically offers coverage against defects in materials and workmanship. Consult product documentation or manufacturer resources for exact warranty terms.