7210 CD/P4ADFB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7210 CD/P4ADFB Bearing Product Overview & Core Advantages
The 7210 CD/P4ADFB is a high-precision duplex angular contact ball bearing configured in a Face-to-Face (DF) arrangement. Engineered for P4A tolerance class and a light preload (Class B), it delivers exceptional rotational accuracy and system rigidity. This matched set is designed to handle combined radial and axial loads simultaneously, making it an ideal solution for applications demanding high speed, high rigidity, and precise positioning. The phenolic cage and optimized internal geometry contribute to its superior performance in demanding operational environments.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7210 | Basic bearing series, indicating a 50mm bore, 90mm OD, and 40mm width. |
| C | Designates a 15° contact angle, optimized for high-speed applications requiring high rigidity. |
| D | Indicates the bearing is part of a Duplex (matched) set. |
| P4A | Specifies the high-precision tolerance class, ensuring extremely tight dimensional and running accuracy. |
| DF | Specifies the Face-to-Face mounting arrangement of the duplex pair. |
| B | Indicates the Light Preload (Class B), which minimizes axial and radial play for enhanced system stiffness. |
7210 CD/P4ADFB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex face-to-face (DF) arrangement creates a highly rigid bearing system capable of withstanding significant combined loads (radial and axial loads from both directions). This configuration increases moment load capacity and is exceptionally stable.
High-Speed Performance: Featuring a lightweight and durable phenolic resin cage, this bearing is engineered for high-speed operation up to 46,000 rpm. The cage ensures smooth ball guidance and reduces centrifugal forces, while the 15° contact angle is ideal for high-speed applications.
Precision & Accuracy: Manufactured to P4A tolerance class with extremely tight bore, outer diameter, and width tolerances, this bearing guarantees superior running accuracy, low vibration, and precise shaft positioning.
Optimized Internal Design: The bearing utilizes 15 high-grade chrome steel balls with a diameter of 12.7 mm, providing an excellent balance between load capacity and speed capability.
7210 CD/P4ADFB Bearing Typical Application Areas
The 7210 CD/P4ADFB is ideally suited for high-performance machinery requiring utmost precision and speed. Key application areas include:
- Machine Tool Spindles (e.g., for milling, grinding, and turning centers)
- High-Frequency Motors and Spindles
- Precision Gearboxes and Drives
- Industrial Pumps and Compressors
- Robotics and Automation (e.g., high-accuracy robot arms)
