6311-ZNR/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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6311-ZNR/C3 Bearing Product Overview & Core Advantages
The 6311-ZNR/C3 is a single row deep groove ball bearing engineered for high-performance industrial applications. This metric bearing features a shielded design and an integral snap ring groove on its outer ring, providing exceptional axial locating capability and simplified housing design. With its C3 radial internal clearance, it's specifically optimized for applications involving thermal expansion and heavy loads, delivering reliable operation across a wide temperature range from -30°C to 120°C. The combination of precision manufacturing to ABEC 1 standards and robust chrome steel construction ensures long service life and consistent performance under demanding conditions.
6311-ZNR/C3 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| Z | Single Shield on One Side | Protects against contaminants while maintaining high-speed capability |
| NR | Snap Ring Groove on Outer Ring | Enables axial positioning and simplifies housing design, reducing assembly complexity |
| C3 | Greater than Normal Radial Clearance | Accommodates thermal expansion and heavy loads, preventing premature failure |
6311-ZNR/C3 Bearing Structural Features & Performance Benefits
Deep Groove Geometry: The optimized raceway design enables the bearing to handle both radial loads and moderate axial loads in either direction, making it versatile for various mounting configurations.
Shielded Protection: The single steel shield effectively retains lubrication and excludes larger contaminants while maintaining high-speed performance up to 5,600 rpm, significantly extending service intervals.
Snap Ring Integration: The outer ring snap ring groove provides positive axial location without requiring complex housing shoulders or additional components, reducing both design complexity and assembly time.
Enhanced Clearance Design: The C3 radial clearance ensures reliable operation in applications with significant temperature variations or where interference fits are used, preventing binding and reducing friction-induced heat generation.
Premium Material Construction: Manufactured from high-quality chrome steel throughout (rings, balls, and cage), the bearing delivers consistent load capacity with a dynamic rating of 16,096 lbf and static rating of 10,116 lbf.
6311-ZNR/C3 Bearing Typical Application Areas
- Electric Motors and industrial gearboxes requiring precise axial positioning
- Material Handling Equipment such as conveyor systems and pulley assemblies
- Agricultural Machinery including tractor components and harvesting equipment
- Industrial Pumps and compressors operating under varying thermal conditions
- Automotive Components where snap ring mounting simplifies assembly processes
- Construction Equipment requiring robust bearings with enhanced clearance for heavy loads
