NTN Deep Groove Ball Bearing 6203LU

The NTN 6203LU is a high-quality single row deep groove ball bearing designed for a wide range of industrial and automotive applications. Featuring a contact seal on one side (denoted by 'LU'), it provides effective protection against contaminants while retaining lubricant, making it ideal for environments with moderate dust or moisture exposure. This bearing excels in supporting radial loads and moderate axial loads in both directions, with smooth operation and low friction characteristics that enhance efficiency and longevity. Key applications include electric motors, conveyor systems, pumps, and automotive components like alternators or tensioners. Advantages over similar products include NTN's precision manufacturing for reduced noise and vibration, superior steel construction for durability, and reliable performance under high-speed conditions up to 12,000 rpm with grease lubrication. However, the single-sided seal may limit its use in highly contaminated environments compared to double-sealed variants, potentially requiring additional shielding. Based on the provided images, this unit appears used, showing signs of wear such as minor rust on the inner race and dirt accumulation, but no major damage is evident. It lacks a faceplate or serial number in the visible areas, and there are no apparent parent/child assets attached. Overall, it's a cost-effective choice for maintenance and replacement in machinery, offering a balance of performance, reliability, and affordability.