1311J
1300 Series Self Aligning Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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1311J Bearing Product Overview & Core Advantages
The 1311J double row angular contact ball bearing represents a high-performance solution for applications requiring exceptional rigidity and the capacity to handle combined loads. Its metric design features a 55mm bore and 120mm outside diameter, delivering a compact and robust form factor ideal for space-constrained, high-precision machinery. Engineered from chrome steel, this bearing is built for durability and reliable operation under significant radial forces, with a dynamic load rating of 11408 lbf. Its open design and optimized internal geometry contribute to superior performance, making it a critical component for systems demanding high reliability and precision.
1311J Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| J | Designates a specific internal design and radial internal clearance of CN (Normal Group). |
| Open | No seals or shields, allowing for higher limiting speeds and optimal lubrication flow. |
1311J Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row ball complement and robust steel cage provide significantly increased radial stiffness compared to single row bearings, enabling stable operation under heavy combined loads.
- Optimized for High-Speed Operation: The open construction and precision-ground components allow for a high limiting speed of 7,500 rpm, making it suitable for demanding rotational applications.
- Precision Engineering: Manufactured with tight dimensional tolerances on the bore, outside diameter, and width, ensuring precise fitment and reliable performance in precision machinery.
- Robust Material Construction: Rings and balls made from high-grade chrome steel offer excellent wear resistance and a long operational lifespan.
1311J Bearing Typical Application Areas
- Industrial Gearboxes and Power Transmission Systems
- Pump and Compressor Systems
- Material Handling Conveyors
- Medium-duty Machine Tool Spindles
- Agricultural and Construction Machinery
