6304NR/C3 QE6
6300 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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6304NR/C3 QE6 Bearing Product Overview & Core Advantages
The 6304NR/C3 QE6 is a single row deep groove ball bearing engineered for high-performance radial load applications. Its defining feature is the snap ring groove on the outer ring, which facilitates secure axial positioning within a housing, simplifying assembly and enhancing system reliability. Manufactured to ABEC 1 | ISO P0 tolerance standards and featuring a C3 radial internal clearance, this bearing is optimized for applications with potential thermal expansion or where a slightly looser fit is required. Constructed entirely from chrome steel, it offers excellent durability and is designed for a broad operating temperature range.
6304NR/C3 QE6 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Benefit |
|---|---|---|
| 6304 | Standard bearing series designation, indicating a medium-duty, metric deep groove ball bearing. | Ensures interchangeability and availability. |
| NR | Snap Ring groove on the outer ring. | Enables secure axial location, reduces housing design complexity and cost. |
| C3 | Radial internal clearance greater than Normal (CN) group. | Accommodates thermal expansion in shafts or housings, preventing preload and overheating. |
| QE6 | Specific cage design and material (Chrome Steel). | Provides high strength and stability, suitable for the bearing's limiting speed. |
6304NR/C3 QE6 Bearing Structural Features & Performance Benefits
The performance of the 6304NR/C3 QE6 is derived from its robust construction. The single row deep groove raceway geometry is fundamental for handling high radial loads, with a dynamic load rating of 3574 lbf. The snap ring feature (NR) is a critical structural addition that provides a positive locating surface, increasing the overall rigidity of the assembly by preventing outer ring creep. The C3 clearance is a key performance selector, making this bearing ideal for applications where operational heat or interference fits could reduce standard clearance to zero, which would risk seizure. The chrome steel cage (QE6) ensures balanced operation and integrity at the specified limiting speed of 14,000 rpm. As an open bearing supplied without lubrication, it offers flexibility for the user to select the optimal grease or oil for their specific environmental and performance requirements.
6304NR/C3 QE6 Bearing Typical Application Areas
- Electric Motors and Gearboxes
- Industrial Pumps and Fans
- Material Handling Conveyors
- Agricultural Machinery
- Automotive Components (e.g., alternators, idler pulleys)
