7222 ACD/P4ADGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 7222 ACD/P4ADGA is a high-precision double row angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to simultaneously handle combined radial and axial loads from both directions, its compact design offers a space-saving solution. Manufactured to the stringent P4A tolerance class, this bearing delivers superior running accuracy, making it ideal for high-speed, high-reliability machinery where performance consistency is critical.
7222 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Designates a 25° contact angle and specific internal geometry optimized for high axial load capacity and rigidity. |
| P4A | Indicates a super-precision tolerance class with enhanced running accuracy and dimensional stability. |
| DGA | Specifies a universal matchable (SU) design. Two bearings can be mounted in a "back-to-back" or "face-to-face" arrangement to optimize preload and system stiffness. |
Structural Features and Performance Benefits
- High Rigidity and Load Capacity: The double row design with a 25° contact angle provides exceptional resistance to moment loads and high combined loads, ensuring stable operation under demanding conditions.
- Precision Performance: The P4A tolerance class guarantees minimal runout and vibration, which is crucial for applications requiring high rotational accuracy.
- Optimized for High Speeds: The lightweight, high-strength phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 16,250 rpm.
- Universal Matching Capability: The SU (Universal Matchable) feature allows for simplified mounting and precise preload control when used in pairs, enhancing system performance and simplifying inventory.
- Superior Material: Constructed from chrome steel for both rings and balls, ensuring high durability, wear resistance, and a long operational life.
7222 ACD/P4ADGA Bearing Typical Application Areas
The 7222 ACD/P4ADGA is ideally suited for high-performance machinery where precision and rigidity are paramount. Key applications include:
- Machine Tool Spindles (e.g., milling, grinding, and turning centers)
- High-Speed Spindles for PCB drilling and routing
- Precision Gearboxes and transmission systems
- Industrial Pumps and Compressors
- Robotic Arm Joints and Rotary Tables
