6303-2RSH/C3 GJN
6000, 6200 & 6300 Series Metric Standard Ball Bearings
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6303-2RSH/C3 GJN Bearing Product Overview & Core Advantages
The 6303-2RSH/C3 GJN is a metric single row deep groove ball bearing engineered for high performance and reliability. Its key advantage lies in its ability to efficiently handle radial loads and moderate axial loads in both directions. Featuring integral contact seals (2RS) and a C3 radial internal clearance, this bearing is optimized for applications with thermal expansion or demanding mounting conditions. Constructed entirely from chrome steel, it offers excellent durability and is pre-lubricated for long-term, maintenance-free operation, making it an ideal choice for robust industrial machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 6303 | Standard bearing series designation, indicating a medium-duty, single row deep groove ball bearing with a 17mm bore. |
| 2RS | Bearing is equipped with contact seals on both sides. These seals provide superior protection against contaminants compared to non-contact shields. |
| H | Indicates the bearing is filled with a specific, high-performance grease lubricant from the manufacturer. |
| /C3 | Specifies a greater than normal radial internal clearance. This is beneficial for applications involving thermal expansion, interference fits, or where lower operating temperatures are desired. |
| GJN | Identifies the specific type of high-performance polyurea grease used, which offers excellent stability and long life across the operating temperature range. |
6303-2RSH/C3 GJN Bearing Structural Features & Performance Benefits
- Robust Sealing & Contamination Resistance: The double-sided contact seals (2RS) form an effective barrier against dust, moisture, and other contaminants, significantly extending bearing life and enabling operation in harsh environments.
- Optimized Internal Clearance: The C3 radial clearance accommodates shaft and housing fits, as well as differential thermal expansion, preventing preload and ensuring smooth, reliable operation under varying thermal conditions.
- High-Quality Construction & Load Capacity: Manufactured from chrome steel for rings, balls, and cage, this bearing ensures high strength and wear resistance. With a dynamic load rating of 3057 lbf, it is capable of handling significant radial loads over a long service life.
- Maintenance-Free Operation: The combination of effective seals and a high-quality polyurea grease (GJN) pre-lubrication means the bearing is ready for use and typically requires no relubrication, reducing maintenance costs and downtime.
6303-2RSH/C3 GJN Bearing Typical Application Areas
- Electric Motors and Gearboxes
- Industrial Pumps and Fans
- Material Handling Equipment (conveyors, pulleys)
- Agricultural Machinery
- Automotive Components (alternators, idlers)