S71909 CB/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71909 CB/P4A Bearing Product Overview & Core Advantages
The S71909 CB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single-row bearing with a 15° contact angle, it is optimized to handle combined loads, carrying significant radial loads and axial loads in one direction simultaneously. Manufactured to the stringent P4 (ABEC-7) tolerance class, it ensures minimal runout and vibration. Its compact design, combined with a phenolic cage and preloaded configuration, makes it an ideal choice for high-speed spindles and other precision machinery where high rigidity and operational reliability are paramount.
S71909 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7 | Series designation for high-precision angular contact ball bearings. |
| 1909 | Bore diameter code (45 mm) and series code. |
| CB | Specific internal clearance and preload grade for optimized performance. |
| P4A | Indicates a P4 (ABEC-7) tolerance class with specific dimensional and running accuracy requirements. |
S71909 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design with a 15° contact angle and P4 tolerance provides exceptional dimensional stability and running accuracy, which is critical for minimizing deflection under load in high-speed applications.
- Optimized for Combined Loads: The angular contact design efficiently supports combined radial and axial loads, making it suitable for applications with complex loading conditions.
- Superior High-Speed Performance: The lightweight phenolic resin cage ensures lower centrifugal forces, reduced friction, and stable operation at the high limiting speed of 28,000 rpm.
- Preloaded Configuration: The bearing is supplied with a preload, which increases system stiffness, improves rotational accuracy, and reduces noise and vibration.
- Durable Construction: Manufactured from chrome steel for both rings and balls, ensuring high durability and a long operational life under demanding conditions.
S71909 CB/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Equipment Spindles
- Advanced Robotics and Automation
