1209-J-S3-C5
1200 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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1209-J-S3-C5 Bearing Product Overview & Core Advantages
The 1209-J-S3-C5 is a double row angular contact ball bearing designed for applications requiring high rigidity and precision performance. This open-type bearing features a cylindrical bore and is specifically engineered to handle significant combined radial and axial loads simultaneously. Manufactured from chrome steel with optimized internal geometry, it delivers exceptional durability and dimensional stability. The bearing comes pre-lubricated and features a CN radial internal clearance, making it ideal for high-speed operations up to 11,000 rpm while maintaining reliable performance across a temperature range of -30°C to 110°C.
1209-J-S3-C5 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Impact |
|---|---|---|
| J | Steel Cage Design | Enhanced strength and stability at high speeds |
| S3 | Special Heat Treatment | Improved dimensional stability and temperature resistance |
| C5 | Greater than Normal Radial Clearance | Accommodates thermal expansion in high-speed applications |
1209-J-S3-C5 Bearing Structural Features & Performance Benefits
Double Row Design: The dual raceway configuration provides significantly higher rigidity compared to single row bearings, enabling superior support for shafts subjected to moment loads and complex force distributions.
Enhanced Load Capacity: Engineered to handle combined radial and axial loads in both directions, with a dynamic load rating of 5152 lbf and static load rating of 1755 lbf, ensuring reliable performance under demanding operating conditions.
High-Speed Capability: The steel cage (J designation) and optimized internal geometry allow for limiting speeds of 11,000 rpm, making it suitable for precision machinery and high-rotation applications.
Precision Engineering: Manufactured with tight dimensional tolerances (bore: -0.012mm to 0, OD: -0.015mm to 0) and CN radial clearance for consistent performance in precision applications.
1209-J-S3-C5 Bearing Typical Application Areas
- Industrial Gearboxes and transmission systems requiring high rigidity
- Machine Tool Spindles and precision machining equipment
- Electric Motors and generator applications
- Material Handling Equipment with combined loading requirements
- Agricultural Machinery and heavy-duty industrial equipment
- Pump and Compressor Systems operating at medium to high speeds
