6212-ZNR
6200 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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6212-ZNR Bearing Product Overview & Core Advantages
The 6212-ZNR is a single row deep groove ball bearing designed for exceptional reliability in demanding applications. This metric bearing features a shielded design and a unique snap ring groove on its outer ring, enabling simplified axial location within a housing. Manufactured from high-grade chrome steel with a stainless steel cage, it offers robust radial load capacity and consistent performance across a wide temperature range from -30°C to 120°C. Its pre-lubricated, shielded construction provides long-term, maintenance-free operation, making it an ideal choice for applications requiring high reliability and simplified assembly.
6212-ZNR Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| Z | Shielded on one side | Protects against contamination from one direction while retaining lubricant. |
| NR | Snap Ring Groove on outer ring | Facilitates secure axial location and simplifies housing design, eliminating the need for complex machining or additional components. |
6212-ZNR Bearing Structural Features & Performance Benefits
- Optimized Radial Load Capacity: The single row deep groove raceway geometry is engineered to efficiently support high radial dynamic load ratings of 12,432 lbf and radial static load ratings of 8,093 lbf.
- Secure Axial Location: The integrated snap ring groove (located on the outer ring with a diameter of 116.6 mm) provides a positive locking mechanism, preventing axial movement and ensuring precise bearing positioning within the assembly.
- Enhanced Contamination Resistance: The shielded (Z) design effectively protects the internal components from particulate contaminants, extending bearing service life and maintaining performance.
- Stable High-Speed Operation: The lightweight, robust stainless steel cage ensures stable ball guidance, contributing to smooth operation at limiting speeds up to 8,000 rpm.
- Maintenance-Free Service: Pre-lubricated with grease, this bearing is ready for immediate installation and delivers long-lasting, lubricated-for-life performance in many applications, reducing total cost of ownership.
6212-ZNR Bearing Typical Application Areas
The 6212-ZNR is ideally suited for a wide range of industrial machinery and equipment where reliable radial load support and simplified housing fixation are critical. Key sectors include:
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Fans
- Material Handling Equipment (e.g., conveyor pulleys)
- Agricultural Machinery
