709 CE/P4ADGA
Miniature Super Precision Angular Contact Ball Bearings
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709 CE/P4ADGA Bearing Product Overview & Core Advantages
The 709 CE/P4ADGA is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a pre-set duplex pair, it enables simplified installation and optimal preload control. Its core advantages include handling combined radial and axial loads simultaneously, achieving very high limiting speeds, and providing superior running accuracy thanks to its P4A tolerance class. This makes it an ideal, compact solution for high-reliability spindles and precision machinery.
709 CE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Benefit |
|---|---|---|
| C | 15° Contact Angle | Optimized for high-speed operation with moderate axial load capacity. |
| E | Optimized Internal Design | Increased load rating and enhanced high-speed performance. |
| P4A | High Precision Tolerance Class | Guarantees exceptional dimensional and running accuracy for precise applications. |
| DGA | Universal Matchable (SU) & Preloaded Pair | Simplifies mounting; two bearings are supplied as a pre-set duplex set for immediate use with defined preload (Extra light / Class A). |
709 CE/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The duplex pair arrangement (DGA) creates a rigid bearing system capable of supporting combined loads from multiple directions. The optimized internal design (suffix E) further increases the dynamic and static load ratings.
- Superior High-Speed Performance: The combination of a 15° contact angle, a lightweight phenolic resin cage, and an open design with efficient lubrication enables a very high limiting speed of 95,000 rpm.
- Exceptional Running Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for maintaining precision in high-speed spindles.
- Universal Matchability: As a Universal Matchable (SU) bearing, any two bearings can be paired in a duplex arrangement (face-to-face, back-to-back, or tandem) to achieve the required stiffness and preload, offering great application flexibility.
709 CE/P4ADGA Bearing Typical Application Areas
The 709 CE/P4ADGA is engineered for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and drilling spindles.
- Precision Instruments: Measuring and testing equipment.
- High-Frequency Motors: Spindles for PCB drilling and small motor applications.
- Robotics: High-precision joints and arm assemblies.
