6306NR/C3 Q66
6300 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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6306NR/C3 Q66 Bearing Product Overview & Core Advantages
The 6306NR/C3 Q66 is a single row deep groove ball bearing designed for superior radial load capacity and reliable performance in demanding applications. This metric bearing features a snap ring groove on its outer ring, enabling simplified axial positioning and secure housing fit. Manufactured to ABEC 1 | ISO P0 tolerance standards with a C3 radial internal clearance, it accommodates thermal expansion in operational environments. Constructed entirely from chrome steel for durability, this open-type bearing delivers robust performance across a wide temperature range from -30°C to 120°C.
6306NR/C3 Q66 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 6306 | Basic bearing designation indicating single row deep groove ball bearing with 30mm bore, 72mm OD, 19mm width |
| NR | Snap ring groove on outer ring for axial positioning and simplified housing design |
| C3 | Greater than normal radial internal clearance for applications with thermal expansion requirements |
| Q66 | Vibration level designation indicating low vibration characteristics |
6306NR/C3 Q66 Bearing Structural Features & Performance Benefits
Deep Groove Design: The optimized raceway geometry provides excellent radial load capacity (6002 lbf dynamic rating) while accommodating moderate axial loads in both directions.
Snap Ring Integration: The outer ring snap ring groove eliminates the need for complex housing shoulders, reducing assembly time and cost while ensuring precise axial location.
Enhanced Clearance: The C3 radial clearance accommodates shaft and housing fits that may cause clearance reduction, as well as thermal expansion in high-temperature applications.
Precision Manufacturing: Built to ABEC 1 | ISO P0 tolerance standards with low vibration characteristics (Q66), ensuring smooth operation and reduced noise levels.
Material Excellence: All-steel construction using chrome steel for rings, balls, and cage provides consistent performance and extended service life.
6306NR/C3 Q66 Bearing Typical Application Areas
- Electric Motors and motor-driven equipment requiring reliable radial support
- Industrial Gearboxes and power transmission systems
- Material Handling Equipment including conveyor systems and pulley assemblies
- Agricultural Machinery where snap ring mounting simplifies maintenance
- Pump and Compressor Systems operating within the specified temperature range
- General Industrial Machinery requiring cost-effective bearing solutions with positioning features
