6309NR/C3
6300 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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6309NR/C3 Bearing Product Overview & Core Advantages
The 6309NR/C3 is a single row deep groove ball bearing engineered for superior radial load capacity and reliable performance in demanding industrial applications. This metric bearing features a snap ring groove on its outer ring, enabling simplified axial positioning and secure housing retention without additional components. Manufactured to ABEC 1 | ISO P0 tolerance standards with C3 radial internal clearance, it delivers consistent operation across varying thermal conditions. The open design ensures maximum speed capability while the chrome steel construction provides excellent durability.
Model Code Breakdown
| Code Segment | Technical Meaning | Performance Benefit |
|---|---|---|
| 63 | Medium duty series | Optimized dimensions for balanced performance |
| 09 | Bore diameter: 45 mm | Standard shaft size compatibility |
| NR | Snap ring groove on outer ring | Simplified axial positioning and secure mounting |
| C3 | Greater than normal radial clearance | Accommodates thermal expansion in high-temperature applications |
6309NR/C3 Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The optimized raceway profile enables high radial load capacity (11,915 lbf dynamic / 7,194 lbf static) and accommodates moderate axial loads in both directions.
Snap Ring Integration: The outer ring snap ring groove provides positive axial location, reducing assembly complexity and enhancing housing stability under vibration conditions.
Precision Manufacturing: Manufactured to ABEC 1 | ISO P0 tolerance class with tight dimensional control (bore: -0.012mm to 0, OD: -0.015mm to 0) ensures consistent performance and interchangeability.
Optimized Internal Clearance: The C3 clearance accommodates differential thermal expansion between shaft and housing, preventing preload conditions in elevated temperature environments up to 120°C.
High-Speed Capability: The open design combined with chrome steel construction enables operation at limiting speeds up to 6,700 rpm with appropriate lubrication.
6309NR/C3 Bearing Typical Application Areas
- Electric Motors & Generators: Main shaft support in industrial motors requiring secure axial positioning
- Gearboxes & Transmission Systems: Power transmission applications benefiting from snap ring mounting convenience
- Industrial Pumps & Compressors: Rotating components where thermal expansion management is critical
- Material Handling Equipment: Conveyor systems and pulley assemblies requiring reliable radial load support
- Agricultural Machinery: Implement drives and PTO shafts operating in demanding environments
