306-ZNR
300 Series Snap Ring Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
306-ZNR Bearing Product Overview & Core Advantages
The 306-ZNR is a single row deep groove ball bearing designed for high-performance industrial applications requiring reliable radial load capacity and precise operation. Its key advantage lies in the integrated snap ring on the outer ring, which provides secure axial positioning and simplifies housing design by eliminating the need for complex shoulder machining. Manufactured with chrome steel rings and balls, and a stainless steel cage, this bearing offers excellent durability and consistent performance. The shielded design and factory-applied grease lubrication ensure long service life with minimal maintenance, making it an ideal choice for compact, high-speed assemblies.
306-ZNR Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 306 | Standard bearing series designation, indicating a metric single row deep groove ball bearing with a 30mm bore diameter. |
| Z | Denotes a shielded bearing on one side, protecting the internal components from large particulate contaminants. |
| NR | Indicates the outer ring is equipped with a snap ring groove and a fitted snap ring. This feature allows for simplified axial location within the housing. |
306-ZNR Bearing Structural Features & Performance Benefits
- Snap Ring for Axial Location: The integrated snap ring (outer ring locating feature) provides a positive axial stop, reducing assembly complexity and ensuring precise bearing positioning without additional components.
- Robust Load Capacity: With a radial dynamic load rating of 6677 lbf and a static load rating of 4856 lbf, this bearing is engineered to handle significant radial loads in demanding applications.
- High-Speed Capability: The combination of a stainless steel cage and optimized grease lubrication enables a high limiting speed of 11,000 rpm, suitable for fast-rotating machinery.
- Precision and Reliability: Manufactured to P0 tolerance class with a CN radial internal clearance, it ensures smooth, low-vibration operation and consistent performance under standard operating conditions.
- Low Maintenance & Contamination Protection: The shielded design and pre-lubrication with grease create a sealed environment, protecting against contamination and extending relubrication intervals.
306-ZNR Bearing Typical Application Areas
- Electric Motors and Generators
- Gearboxes and Transmission Systems
- Industrial Pumps and Compressors
- Material Handling Equipment
- Agricultural Machinery
