307238
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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307238 Bearing Product Overview & Core Advantages
The 307238 is a single row angular contact ball bearing engineered for applications demanding high precision and robust performance under combined loads. Its defining feature is the 40° contact angle, which provides exceptional capacity to handle significant axial loads in one direction alongside radial loads. Manufactured to a P6 (ABEC-3) tolerance class, this bearing ensures superior running accuracy, making it ideal for high-speed spindles and other precision machinery. The open design, combined with a lightweight nylon cage, facilitates high limiting speeds and stable operation, offering a compact and highly reliable solution for demanding industrial environments.
307238 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 307238 | Standard bearing designation number, defining the bearing dimensions (400mm bore, 600mm OD, 90mm width). |
| Open (Seal Type) | No integral seals or shields. This configuration is selected for high-speed applications and allows for customized lubrication systems. |
| P6 (Tolerance Class) | Corresponds to ABEC-3, indicating a precision bearing with tighter dimensional and running accuracy tolerances than standard grades. |
| 40° (Contact Angle) | Specifies the angle of the raceways, optimized for carrying high axial loads. |
307238 Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The single row angular contact design, with its optimized raceway geometry and 40° contact angle, provides high rigidity and is specifically engineered to support heavy combined loads (radial and axial). The substantial radial dynamic load rating of 136,125 lbf and static load rating of 265,500 lbf confirm its robust performance.
- Optimized High-Speed Performance: The use of a lightweight nylon cage reduces centrifugal forces and friction, directly contributing to a higher limiting speed. The open structure allows for efficient lubrication flow and heat dissipation.
- Precision Engineering: Manufactured to P6 tolerance from high-grade chrome steel for both rings and balls, this bearing guarantees precise shaft guidance, low vibration, and extended service life in precision applications.
307238 Bearing Typical Application Areas
- Machine Tool Spindles
- Industrial Gearboxes
- Large Pumps and Compressors
- Precision Turntables and Indexing Tables
- Material Handling Equipment
