71910 CE/P4ADFA
71900 Series Super Precision Angular Contact Ball Bearings
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71910 CE/P4ADFA Bearing Product Overview & Core Advantages
The 71910 CE/P4ADFA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a duplex face-to-face (DF) matched set, it excels at handling combined radial and axial loads from both directions simultaneously. Manufactured to the stringent P4A tolerance class, this bearing delivers superior running accuracy, making it ideal for high-speed spindles and other precision machinery where minimal runout and high system stiffness are critical.
71910 CE/P4ADFA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71910 | Basic bearing series, indicating a super-precision angular contact design with a 50 mm bore, 72 mm OD, and 24 mm width. |
| CE | Indicates a 15° contact angle and specific internal design optimizations for high-speed operation. |
| P4A | The tolerance class, denoting super-precision levels with very tight dimensional and running accuracy tolerances. |
| DF | Signifies a Duplex Face-to-Face preloaded pair. This arrangement increases system rigidity and is suited for applications with moment loads. |
| A | Specifies the preload level as Extra Light (Class A), which minimizes friction and heat generation at high speeds. |
71910 CE/P4ADFA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex face-to-face (DF) arrangement of two bearings creates a highly rigid support system, capable of withstanding significant combined radial and axial loads from both directions. This configuration is essential for applications requiring high positional accuracy under load.
Super-Precision Performance: Manufactured to ABEC 7 / P4A tolerance standards, this bearing ensures extremely low vibration and noise levels, contributing to superior finish quality in machining operations and extended service life.
Optimized High-Speed Operation: The phenolic resin cage is lightweight and possesses excellent sliding properties, reducing centrifugal forces and friction. Combined with the 15° contact angle and extra light preload, it enables a high limiting speed of 46,000 rpm.
Premium Material Construction: Made from high-grade chrome steel for both rings and balls, the bearing ensures high durability, wear resistance, and consistent performance under the specified temperature range of -30°C to 110°C.
71910 CE/P4ADFA Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers where precision and rigidity are paramount.
- Precision Grinding Spindles: Applications requiring the highest levels of rotational accuracy and surface finish.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM electric motors.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring reliable, high-precision rotation.
