National 201-SS Generator Commutator End Bearing

Overview of National 201-SS Generator Commutator End Bearing

The National 201-SS generator commutator end bearing is engineered for reliable performance in various automotive electrical systems. Designed to support smooth rotation and reduce friction, this ball bearing is compatible with multiple vehicle makes including Audi, Chrysler, Dodge, Mitsubishi, Nissan, and Toyota.

• Single row radial design for efficient load handling
• Precision bore diameter of 0.472 inches (12.000 mm)
• Outer diameter of 1.260 inches (32.000 mm) for secure fitment
• Width of 0.394 inches (10.000 mm) ensuring compact installation
• Compatible with a wide range of models such as Audi 80 Quattro, Toyota Celica, and Dodge Challenger

Technical Specifications and Design Features

The 201-SS bearing features a single row radial design optimized for generator commutator end applications. Its inner race bore measures 0.472 inches (12.000 mm) with a radius of 0.024 inches (0.610 mm), providing precise alignment and durability. The outer race outside diameter is 0.906 inches (23.000 mm) with a matching radius, while the overall outside diameter is 1.260 inches (32.000 mm). The bearing width is consistently 0.394 inches (10.000 mm), allowing for a compact yet robust fit within the generator assembly.

Compatible Vehicles and Applications

This National generator commutator end bearing is compatible with a variety of vehicles, including but not limited to:

• Audi models: 80, 80 Quattro, 90, 90 Quattro, 100, 100 Quattro, 200, 200 Quattro, S4, S6
• Chrysler and Dodge models: Challenger, Power Ram 50, Ram 50
• Mitsubishi models: Colt, Conquest, Cordia, Galant, Mighty Max, Mirage, Montero, Pickup, Tredia
• Nissan models: 510, 720
• Toyota models: Celica, Corolla, Corona, Coupe, Land Cruiser

Common Issues Addressed by the 201-SS Bearing

• Excessive generator noise due to worn bearings
• Generator shaft misalignment causing electrical faults
• Reduced generator efficiency from increased friction
• Premature bearing failure in high-load conditions
• Vibration and instability in generator operation

Installation Notes and Tips

When installing the National 201-SS generator commutator end bearing, ensure the bore and outer diameter dimensions match the generator housing specifications. Proper lubrication and clean installation environment are critical to prevent contamination and extend bearing life. Use appropriate tools to avoid damage to the bearing races and confirm secure seating to maintain alignment during operation.

Quality Assurance and Warranty

National bearings are manufactured to meet stringent quality standards, ensuring durability and consistent performance in automotive electrical systems. The 201-SS bearing is part of the 200 series and Type A-3 classification, reflecting its suitability for generator commutator end applications. While specific warranty details should be confirmed with the distributor, National typically offers coverage against manufacturing defects to support long-term reliability.