7308 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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7308 BECBJ Bearing Product Overview & Core Advantages
The 7308 BECBJ is a single row angular contact ball bearing engineered for applications requiring high precision and reliable performance under combined loads. Its design is optimized to support significant axial loads in one direction alongside radial loads, making it ideal for high-speed operations. Manufactured to P6 (ABEC-3) tolerance class, this bearing ensures superior running accuracy and dimensional stability. The 40° contact angle provides excellent axial load capacity, while the stainless steel cage contributes to its durability and high-speed capability.
7308 BECBJ Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7308 | Standard bearing series designation; 40 mm bore diameter, 90 mm outside diameter, 23 mm width. |
| BE | Designates a 40° contact angle, optimized for high axial load capacity. |
| CB | Indicates enhanced internal clearance and geometry for precision applications. |
| J | Specifies the stainless steel pressed cage design, suitable for high speeds and corrosive environments. |
7308 BECBJ Bearing Structural Features & Performance Benefits
Optimized Internal Geometry: The 40° contact angle and precisely ground raceways enable efficient handling of combined radial and axial loads, providing high operational rigidity.
High-Speed Capability: The lightweight stainless steel cage (J) minimizes centrifugal forces, allowing for a limiting speed of 10,000 rpm. The open design facilitates efficient lubrication management for thermal stability.
Superior Load Ratings: With a dynamic load rating of 11,250 lbf and a static load rating of 7,312 lbf, this bearing offers reliable performance in demanding conditions.
Precision Engineering: Manufactured to P6 (ABEC-3) tolerance class with tight dimensional tolerances on the bore, outside diameter, and width, ensuring precise fit and smooth operation in high-precision machinery.
7308 BECBJ Bearing Typical Application Areas
The 7308 BECBJ angular contact ball bearing is ideally suited for:
- Machine Tool Spindles - Providing high rigidity and accuracy for machining centers and lathes.
- High-Speed Motors and Pumps - Handling combined loads at elevated rotational speeds.
- Precision Gearboxes - Ensuring reliable power transmission with minimal deflection.
- Industrial Robotics - Used in joint and arm assemblies requiring high positional accuracy.
- Agricultural and Construction Machinery - Supporting heavy-duty operations in pumps and transmissions.
