7309 BECBJ
Single Row Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Inner Ring Dimensions
Outer Ring Dimensions
Performance
Materials
Environment & Compliance
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7309 BECBJ Bearing Product Overview & Core Advantages
The 7309 BECBJ is a single row angular contact ball bearing designed for high-precision applications requiring superior performance under combined loads. Engineered to accommodate significant axial loads in one direction alongside radial loads, this bearing features a 40° contact angle for optimal load distribution. Manufactured to P6 (ABEC-3) tolerance class, it delivers exceptional running accuracy and reliability in demanding industrial environments. The bearing comes pre-lubricated and operates efficiently within a temperature range of -30° to 110°C.
7309 BECBJ Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Performance Benefit |
|---|---|---|
| BE | High capacity design with optimized internal geometry | Enhanced load carrying capacity and extended service life |
| CB | Specific internal clearance and contact angle combination | Optimized for precision applications with controlled preload conditions |
| J | Stainless steel pressed cage construction | Excellent corrosion resistance and suitability for high-speed operation |
7309 BECBJ Bearing Structural Features & Performance Benefits
Optimized Internal Geometry: The BE designation indicates enhanced raceway and ball complement design, providing superior load distribution and increased dynamic load rating of 13,725 lbf.
Precision Engineering: Manufactured to P6 tolerance class with bore diameter tolerance of -0.01mm to 0, ensuring exceptional running accuracy and minimal vibration in precision machinery.
High-Speed Capability: The stainless steel cage (J-suffix) combined with optimized internal geometry enables reliable operation at limiting speeds up to 9,000 rpm.
Thermal Stability: Chrome steel construction maintains dimensional stability across the operating temperature range of -30° to 110°C, ensuring consistent performance in varying thermal conditions.
7309 BECBJ Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers requiring accurate rotational performance
- Industrial Pumps - Centrifugal and process pumps handling combined radial and axial loads
- Precision Gearboxes - Transmission systems demanding high running accuracy and reliability
- Medical Equipment - Diagnostic imaging systems and laboratory instrumentation
- Robotics and Automation - Joint mechanisms and precision positioning systems
