6303-2ZNR
6300 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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6303-2ZNR Bearing Product Overview & Core Advantages
The 6303-2ZNR is a metric single row deep groove ball bearing engineered for high-performance industrial applications. This shielded bearing is distinguished by its integrated snap ring groove on the outer ring, enabling simplified axial location within a housing. Manufactured from high-grade chrome steel with a stainless steel cage, it delivers excellent durability and corrosion resistance. Pre-lubricated with grease, it offers reliable operation and is designed to handle significant radial loads efficiently, making it an ideal choice for compact assemblies requiring robust and maintenance-free operation.
Model Code Breakdown
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 6303 | Basic Bearing Series & Size | Denotes a standard metric single row deep groove ball bearing with a 17mm bore, 47mm OD, and 14mm width. |
| 2Z | Shielded on Both Sides | Provides effective protection against contamination while allowing for high-speed operation with minimal friction. |
| NR | Snap Ring Groove | The outer ring features a groove for a snap ring, facilitating secure axial positioning and simplifying housing design. |
6303-2ZNR Bearing Structural Features & Performance Benefits
- Robust Load Capacity: With a dynamic load rating of 3215 lbf and a static load rating of 1472 lbf, this bearing is built to handle demanding radial loads in continuous operation.
- Optimized for Speed: The combination of a stainless steel cage and effective sealing allows for a limiting speed of 17,000 rpm, making it suitable for high-velocity applications.
- Simplified Assembly and Axial Location: The integrated snap ring groove (NR) eliminates the need for complex housing shoulders or end caps, reducing assembly time and cost.
- Maintenance-Free & Long Service Life: The 2Z shields retain the factory-applied grease and protect the rolling elements from contaminants, ensuring long-term reliability and reduced maintenance.
- Precision Engineering: Manufactured to P0 tolerance class with a CN radial internal clearance, it provides consistent performance and smooth operation.
6303-2ZNR Bearing Typical Application Areas
The 6303-2ZNR is widely used in various industrial sectors due to its reliability and ease of installation. Key applications include:
- Electric Motors and Gearboxes
- Pumps and Compressors
- Material Handling Equipment (e.g., conveyor systems)
- Agricultural Machinery
- Automotive Components (e.g., alternators, idlers)
