71919 CD/P4ADGB
71900 Series Super Precision Angular Contact Ball Bearings
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71919 CD/P4ADGB Bearing Product Overview & Core Advantages
The 71919 CD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high rigidity. As a universal matchable (SU) bearing supplied in a pre-loaded duplex set, it is engineered to handle combined radial and axial loads simultaneously. Its P4A tolerance class ensures superior running accuracy, making it ideal for high-speed spindles and other high-precision machinery. The phenolic cage and optimized internal geometry contribute to its outstanding high-speed performance and operational stability.
71919 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71919 | Basic bearing designation, indicating a high-precision angular contact bearing series with a 95 mm bore. |
| CD | Contact angle of 15° and specific internal design for universal matching (SU). |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards for dimensional and running accuracy. |
| DGB | Indicates a duplex set with a specific preload: Light preload / Class B. |
71919 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex set configuration and 15° contact angle provide significantly increased rigidity, enabling the bearing to withstand substantial combined loads (radial and axial) with minimal deflection.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry and light preload contribute to a high limiting speed of 16,000 rpm, making it an excellent high-speed bearing.
- Precision & Accuracy: Manufactured to P4A tolerance class, this bearing guarantees extremely tight dimensional control and superior running accuracy, which is critical for applications like machine tool spindles.
- Universal Matchability (SU): This feature allows for flexible mounting arrangements (back-to-back, face-to-face, or tandem) to perfectly suit the specific load and stiffness requirements of the application.
71919 CD/P4ADGB Bearing Typical Application Areas
The 71919 CD/P4ADGB is ideally suited for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Medical and Laboratory Equipment
- Aerospace Positioning Systems
