6209NR/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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6209NR/C3 Bearing Product Overview & Core Advantages
The 6209NR/C3 is a single row deep groove ball bearing engineered for robust performance in demanding industrial applications. This metric bearing features a snap ring groove on its outer ring, enabling simplified axial location within a housing. Its defining characteristic is the C3 radial internal clearance, which makes it particularly suitable for applications involving thermal expansion, heavy loads, or where interference fits are used. Designed with open construction and manufactured from high-grade chrome steel, it delivers reliable operation and excellent radial load capacity.
6209NR/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 6209 | Standard designation for a single row deep groove ball bearing with a 45mm bore and 85mm OD. |
| NR | Indicates a snap ring groove (fitted) on the outer ring. This feature aids in axial positioning and simplifies housing design. |
| C3 | Specifies a greater than normal radial internal clearance. This is critical for applications with high operating temperatures or heavy loads to prevent pre-loading and ensure smooth operation. |
6209NR/C3 Bearing Structural Features & Performance Benefits
- Snap Ring Groove for Simplified Assembly: The integrated snap ring (supplied with the bearing) allows for secure axial location, reducing the complexity and cost of the surrounding housing structure.
- Optimized Internal Clearance: The C3 clearance is a key performance feature. It accommodates shaft and housing fits that cause clearance reduction, as well as differential thermal expansion between the inner and outer rings during operation, preventing seizure and reducing friction.
- Robust Load Handling: With a dynamic load rating of 7351 lbf and a static load rating of 4564 lbf, this bearing is built to handle significant radial loads reliably.
- High-Speed Capability: The limiting speed of 7,700 rpm is supported by the precision ABEC 1 | ISO P0 tolerance class and the stable, one-piece chrome steel cage.
- Durable Material Construction: All core components—rings, balls, and cage—are manufactured from chrome steel, ensuring high strength, durability, and consistent performance.
6209NR/C3 Bearing Typical Application Areas
The 6209NR/C3 is versatile and finds use in a wide range of industrial machinery where reliable radial support and easy mounting are paramount. Key applications include:
- Electric Motors and Gearboxes
- Material Handling Equipment (conveyors, pulleys)
- Agricultural Machinery
- Industrial Fans and Blowers
- Pumps and Compressors
