71907 CE/P4ADGA
71900 Series Super Precision Angular Contact Ball Bearings
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71907 CE/P4ADGA Bearing Product Overview & Core Advantages
The 71907 CE/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. Manufactured to the stringent P4A tolerance class, this bearing excels in high-precision spindles and other critical machinery. Its universal matchable (SU) design allows for flexible mounting in pairs to support combined loads, including significant axial loads in both directions. The bearing features a phenolic cage and is pre-lubricated, ensuring reliable operation and long service life in demanding conditions.
71907 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71907 | Basic bearing series and size designation. |
| C | Designates a 15° contact angle, optimized for high-speed applications and axial load capacity. |
| E | Indicates an optimized internal design, often for higher speeds and reduced friction. |
| P4A | Specifies the tolerance class, denoting very high precision for dimensional and running accuracy. |
| DGA | Universal Matchable (SU) designation, meaning two bearings can be paired in a universal arrangement (DB, DF, or DT) without selective matching. |
71907 CE/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class with a 15° contact angle, this bearing provides exceptional running accuracy and stiffness, which is critical for minimizing deflection in high-speed spindles.
- Superior High-Speed Capability: The combination of the phenolic cage and optimized internal geometry contributes to low friction and heat generation, enabling a high limiting speed of 56,000 rpm.
- Universal Matching (SU): The DGA suffix confirms that bearings are universal matchable. This allows for simplified installation and optimal performance in preloaded pairs to handle complex combined loads.
- Optimized Load Capacity: With a radial dynamic load rating of 2812 lbf and a radial static load rating of 2092 lbf, it offers reliable performance under significant stress.
- Pre-Lubricated for Immediate Use: The bearing comes pre-lubricated, ensuring immediate startup and protection, suitable for an operating temperature range of -30°C to 110°C.
71907 CE/P4ADGA Bearing Typical Application Areas
The 71907 CE/P4ADGA is engineered for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and laboratory equipment.
- High-Frequency Motors and Spindles: Applications requiring minimal runout and vibration.
- Aerospace and Defense Systems: Gyroscopes, radar equipment, and other critical rotational mechanisms.
