6306-2RSNR JEM/C3 QE6 HT51
6300 Series Snap Ring Bearings
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Basic Information
Main Dimensions
Outer Ring Dimensions
Performance
Materials
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6306-2RSNR JEM/C3 QE6 HT51 Bearing Product Overview & Core Advantages
The 6306-2RSNR JEM/C3 QE6 HT51 is a single row deep groove ball bearing engineered for high-performance industrial applications. Its defining characteristics include a snap ring groove on the outer ring for simplified axial location and secure housing fits, and integrated seals (2RS) for effective contamination protection. Manufactured to ABEC 1 / ISO P0 tolerance standards with a C3 radial internal clearance, this bearing is optimized for stable operation under varying thermal conditions. The high-grade chrome steel construction and precision grinding ensure reliable performance, high limiting speed, and long service life, making it a robust solution for demanding radial load scenarios.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 6306 | Basic bearing series, indicating a single row deep groove ball bearing with a 30mm bore, 72mm OD, and 19mm width. |
| 2RS | Bearing is fitted with contact seals on both sides, providing excellent protection against contaminants and moisture retention. |
| NR | Outer ring features a snap ring groove. This allows for simplified axial location within a housing, reducing design complexity and assembly time. |
| JEM | Manufacturer-specific designation for the cage, typically indicating a pressed steel cage design suitable for high speeds. |
| C3 | Specifies a greater than normal radial internal clearance. Ideal for applications with expected thermal expansion or where interference fits are used. |
| QE6 | Manufacturer-specific code, often related to internal quality and performance classification. |
| HT51 | Indicates the use of a specific high-temperature grease, suitable for the specified operating temperature range of -30°C to 120°C. |
6306-2RSNR JEM/C3 QE6 HT51 Bearing Structural Features & Performance Benefits
- Robust Sealing & Contamination Resistance: The double-sided contact seals (2RS) effectively shield the internal rolling elements from dust, dirt, and moisture, significantly extending bearing life in harsh environments and making it a maintenance-free solution for many applications.
- Simplified Mounting & Axial Location: The snap ring groove (NR) on the outer ring eliminates the need for complex housing shoulders or end caps, simplifying assembly, reducing component count, and ensuring secure axial positioning.
- Optimized for Thermal Stability: The C3 radial internal clearance accommodates dimensional changes caused by thermal expansion from high-speed operation or interference fits, preventing preload and ensuring smooth, reliable performance.
- High-Speed Capability & Durability: The combination of a precision-ground chrome steel raceway, a robust steel cage (JEM), and high-temperature grease (HT51) enables a high limiting speed and consistent operation across a wide temperature range.
6306-2RSNR JEM/C3 QE6 HT51 Bearing Typical Application Areas
This versatile and robust bearing is ideally suited for a wide range of industrial machinery and equipment, including:
- Electric Motors and Gearboxes
- Industrial Fans and Blowers
- Material Handling Conveyors
- Agricultural Machinery
- Pumps and Compressors
- General machinery requiring a sealed, pre-lubricated bearing with easy axial location.
