7215 CD/P4ADGC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7215 CD/P4ADGC Bearing Product Overview & Core Advantages
The 7215 CD/P4ADGC is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-set pair, it excels at handling combined loads—simultaneously supporting significant radial loads and axial loads in both directions. Its P4A tolerance class ensures ultra-precise dimensions and running accuracy, making it ideal for high-speed spindles and other high-precision machinery. The phenolic cage and optimized internal geometry contribute to its superior high-speed performance and smooth operation.
7215 CD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| 7215 | Basic Designation | Bore: 75 mm, OD: 130 mm, Width: 50 mm |
| CD | Contact Angle & Design | 15° contact angle; optimized for high rigidity and universal matching. |
| P4A | Tolerance Class | High-precision grade with tight dimensional and running accuracy tolerances. |
| DGC | Preload & Arrangement | Moderate preload (Class C); supplied as a universal matchable (SU) pair for simplified mounting and optimal performance. |
7215 CD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 15° contact angle and the use of a matched pair arrangement provide exceptional stiffness, enabling the bearing to withstand heavy combined radial and axial loads from both directions.
- Superior High-Speed Performance: The lightweight and robust phenolic resin cage ensures excellent dimensional stability and low friction at high rotational speeds, supporting a limiting speed of 22,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and vibration, which is critical for applications requiring extreme accuracy and smooth operation.
- Universal Matchability (SU): The bearings are universally matchable, allowing any two bearings to be paired in any combination (face-to-face, back-to-back, or tandem) without pre-load loss, offering immense flexibility in machine design and assembly.
7215 CD/P4ADGC Bearing Typical Application Areas
The 7215 CD/P4ADGC is engineered for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and rotary actuators requiring high positional accuracy.
- High-Frequency Motors and Spindles: Applications in aerospace and semiconductor manufacturing equipment.
- Medical Equipment: High-speed centrifuges and precision imaging devices.
