6209-ZNB/C3
6200 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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6209-ZNB/C3 Bearing Product Overview & Core Advantages
The 6209-ZNB/C3 is a single row deep groove ball bearing engineered for robust performance in demanding industrial applications. This precision bearing is designed to primarily accommodate high radial loads while also handling moderate axial loads in both directions. Its key advantages include a high limiting speed and a generous C3 radial internal clearance, making it exceptionally suitable for applications involving thermal expansion or where shaft fits result in tighter internal clearances. The combination of shielded construction and a snap ring groove on the outer ring provides enhanced versatility and protection.
6209-ZNB/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Benefit |
|---|---|---|
| Z | Shielded on one side | Protects bearing internals from large particulate contaminants. |
| N | Snap ring groove on the outer ring | Enables simplified axial location within a housing, reducing assembly complexity and cost. |
| B | 40° contact angle (in some series, indicates enhanced internal design) | Generally signifies a design with increased load capacity. |
| /C3 | Greater than normal radial internal clearance | Accommodates thermal expansion from high-speed operation or interference fits, preventing premature failure due to excessive preload. |
6209-ZNB/C3 Bearing Structural Features & Performance Benefits
- Optimized Internal Geometry & High-Grade Materials: Manufactured from chrome steel for both rings and balls, this bearing ensures high durability and resistance to wear. The single-row deep groove raceway is precision-ground to ABEC 1 | ISO P0 tolerance standards, guaranteeing consistent performance and smooth operation.
- Enhanced Load Capacity & Rigidity: The robust chrome steel cage and optimized raceway profile contribute to high dynamic and static load ratings (7351 lbf and 4564 lbf respectively), providing reliable support under significant radial loads.
- High-Speed Capability: With a limiting speed of 7,700 rpm, this bearing is well-suited for high-speed applications. The C3 clearance is critical here, as it prevents binding and overheating that can occur at elevated rotational speeds.
- Simplified Installation & Versatility: The snap ring groove (N) on the outer ring allows for easy axial positioning, eliminating the need for complex housing shoulders or locknuts. The shielded (Z) design offers a degree of contamination protection in environments where full-contact seals are not required.
6209-ZNB/C3 Bearing Typical Application Areas
The 6209-ZNB/C3 is a versatile component found in a wide range of industrial machinery. Its bearing dimensions (45mm bore, 85mm OD, 19mm width) and performance characteristics make it ideal for:
- Electric Motors and Generators
- Gearboxes and Power Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment (e.g., conveyor pulleys)
- Agricultural Machinery
- General Industrial Machinery requiring reliable, high-speed rotary motion.
