6208-ZTN9/C3
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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6208-ZTN9/C3 Bearing Product Overview & Core Advantages
The 6208-ZTN9/C3 is a single row deep groove ball bearing engineered for robust performance in demanding applications. This metric bearing is characterized by its ability to accommodate high radial loads and moderate axial loads in both directions. Its design ensures reliable operation, making it suitable for a wide range of industrial machinery. Key advantages include a high limiting speed and a generous radial internal clearance (C3), which provides operational stability under varying thermal conditions. Manufactured with precision to ABEC 1 standards, it offers an excellent balance of performance, durability, and value.
6208-ZTN9/C3 Bearing Model Code Explained, Specifications & Naming Convention
- 6208: Basic series designation for a single row deep groove ball bearing with a 40mm bore and 80mm outside diameter.
- Z: Signifies a shielded closure on one side. This shield protects the bearing interior from large contaminants while minimizing friction.
- TN9: Indicates a glass fiber reinforced polyamide (Nylon) cage. This cage design is lightweight, promotes quiet operation, and is ideal for high-speed applications.
- C3: Denotes a greater than normal radial internal clearance. This is beneficial for applications where thermal expansion is a concern, preventing preload and ensuring smooth operation.
6208-ZTN9/C3 Bearing Structural Features & Performance Benefits
The performance of the 6208-ZTN9/C3 is a direct result of its construction:
- High-Speed Capability: The combination of the low-friction Nylon TN9 cage and the optimized internal geometry allows this bearing to achieve a high limiting speed of 8,300 rpm, making it a capable high-speed bearing.
- Robust Load Capacity: With a dynamic load rating of 6542 lbf and a static load rating of 4002 lbf, this bearing is built to handle significant radial loads over a long service life.
- Thermal Stability: The specified C3 clearance provides extra space between the rolling elements and raceways. This accommodates differential thermal expansion between the shaft and housing, preventing binding and reducing friction-induced heat.
- Contamination Protection: The shielded (Z) design offers a first line of defense against dust and debris, extending bearing life in less-than-ideal environments. It is supplied without lubrication, allowing for the use of specialized greases or oils suited to the specific application.
6208-ZTN9/C3 Bearing Typical Application Areas
This versatile bearing is commonly specified in a variety of industrial sectors due to its balanced performance characteristics. Typical applications include:
- Electric Motors and Generators
- Industrial Gearboxes
- Material Handling Equipment (e.g., conveyor pulleys)
- Agricultural Machinery
- Pumps and Compressors
- General Industrial Machinery requiring reliable radial load support
