7222 CD/P4ADFB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7222 CD/P4ADFB Bearing Product Overview & Core Advantages
The 7222 CD/P4ADFB is a precision duplex angular contact ball bearing configured in a Face-to-Face (DF) arrangement. Engineered to the exacting P4A tolerance class, it is designed for applications demanding exceptional rotational accuracy and dimensional stability. This matched pair excels at handling combined loads, providing high rigidity and reliable performance in high-speed, precision machinery. Its light preload (Class B) ensures smooth operation with minimal runout, making it an ideal solution for spindles and other critical rotating components.
7222 CD/P4ADFB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7222 | Basic bearing series and size designation |
| CD | Duplex bearing with a 15° contact angle |
| P4A | High precision tolerance class (equivalent to ABEC 7) |
| DF | Face-to-Face arrangement of the matched pair |
| B | Indicates light preload |
7222 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 radial and axial loads from both directions. This configuration provides excellent stability under complex loading conditions.
Precision Performance: Manufactured to P4A tolerance class with tight dimensional controls on bore diameter, outside diameter, and width, ensuring minimal runout and vibration for superior rotational accuracy.
High-Speed Capability: The phenolic cage material and optimized internal geometry contribute to excellent high-speed performance, with a limiting speed of 16,000 rpm.
Enhanced Durability: Constructed from chrome steel for both rings and balls, providing high hardness and wear resistance. The 16 precision balls with 26.988 mm diameter ensure even load distribution and long service life.
7222 CD/P4ADFB Bearing Typical Application Areas
The 7222 CD/P4ADFB is specifically designed for high-performance applications requiring precision and reliability:
- Machine Tool Spindles - High-speed milling, grinding, and turning centers
- Precision Gearboxes - Industrial transmissions requiring minimal backlash
- High-Speed Motors - Electric motors and generators operating at elevated speeds
- Aerospace Components - Aircraft auxiliary systems and precision mechanisms
- Medical Equipment - High-speed dental handpieces and surgical tools
