71910 CE/P4ADBB
71900 Series Super Precision Angular Contact Ball Bearings
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71910 CE/P4ADBB Bearing Product Overview & Core Advantages
The 71910 CE/P4ADBB is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement provides superior stability and can accommodate combined loads (radial and axial loads simultaneously). Manufactured to P4A tolerance class and featuring a light preload (Class B), it delivers high running accuracy, reduced vibration, and is optimized for high-speed operation up to 46,000 rpm. Its compact design and phenolic cage make it an ideal choice for high-precision, high-reliability machinery.
71910 CE/P4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71910 | Basic bearing designation, indicating a metric, light series angular contact ball bearing. |
| C | Denotes a 15° contact angle, optimized for high-speed applications with moderate axial loads. |
| E | Indicates an optimized internal design, often featuring a larger ball complement and reinforced shoulders for increased load capacity. |
| P4A | Specifies the tolerance class, signifying very high precision for both dimensional and running accuracy. |
| DB | Signifies the bearing is supplied as a Duplex Back-to-Back matched set. This arrangement increases rigidity and moment load capacity. |
| B | Indicates the specific preload level (Light / Class B) applied to the matched set, ensuring optimal stiffness and performance. |
71910 CE/P4ADBB Bearing Structural Features & Performance Benefits
High Rigidity and Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists moment loads and shaft deflection, making it exceptionally stable under complex loading conditions.
Superior Load Capacity: The combination of a 15° contact angle and the "E"-type internal design with 21 balls provides excellent capability to handle combined radial and axial loads.
Optimized High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the precision-ground components and light preload contribute to low heat generation and smooth operation at the limiting speed of 46,000 rpm.
Precision Engineering: Manufactured to P4A tolerance class with tight bore, outside diameter, and width tolerances, this bearing ensures minimal runout and high positional accuracy for critical applications.
71910 CE/P4ADBB Bearing Typical Application Areas
This high-precision, high-speed bearing is ideally suited for applications where accuracy and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: For CNC machining centers, grinding spindles, and high-speed milling heads.
- Precision Instrumentation: Used in measuring devices, optical scanners, and laboratory equipment.
- High-Frequency Motors and Spindles: Essential for applications requiring ultra-high rotational speeds.
- Aerospace and Defense Systems: In gyroscopes, navigation systems, and other critical control mechanisms.
