6306-ZNR
6300 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
6306-ZNR Bearing Product Overview & Core Advantages
The 6306-ZNR is a single row deep groove ball bearing engineered for exceptional performance in demanding applications. Its core advantage lies in its integrated snap ring on the outer ring, which simplifies axial location within a housing, reducing design complexity and assembly time. Manufactured with high-precision tolerances (P0 class) and shielded on both sides, this bearing offers reliable radial load capacity and is pre-lubricated for long-term, maintenance-free operation. Its compact design and robust construction make it an ideal choice for applications requiring high reliability and simplified mounting.
Model Code Breakdown
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 6306 | Standard bearing series designation, indicating a medium-duty, metric deep groove ball bearing with a 30mm bore, 72mm OD, and 19mm width. | Defines the core bearing dimensions and basic load rating. |
| Z | Denotes a shielded bearing on one side. | Protects against contaminants while allowing for high-speed operation. |
| NR | Indicates the outer ring has a snap ring groove and a fitted snap ring. | Enables secure and cost-effective axial location, eliminating the need for complex housing shoulders and locknuts. |
6306-ZNR Bearing Structural Features & Performance Benefits
- Snap Ring Locating Feature: The integrated snap ring (78.6mm OD, 1.7mm width) provides a positive axial location for the bearing within the housing. This feature significantly increases rigidity and simplifies the housing design, leading to reduced manufacturing costs and assembly errors.
- Robust Load Capacity: With a dynamic load rating of 6654 lbf and a static load rating of 3597 lbf, this bearing is designed to handle significant radial loads in continuous operation.
- Shielded & Pre-Lubricated Design: The steel shields retain the factory-applied grease, protecting the chrome steel rings and balls from contamination. This creates a sealed, maintenance-free environment suitable for the specified temperature range of -30°C to 120°C.
- Precision & Speed: Built to P0 tolerance class with a standard radial internal clearance (CN), it ensures smooth running and low vibration. The stainless steel cage and optimized lubrication contribute to a high limiting speed of 13,000 rpm.
6306-ZNR Bearing Typical Application Areas
The 6306-ZNR is ideally suited for applications where secure axial location and reliable performance are critical. Common uses include:
- Electric Motors and Gearboxes
- Industrial Pumps and Compressors
- Material Handling Conveyors
- Agricultural Machinery
- Automotive Components (e.g., alternators, idler pulleys)
