7022 CDGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
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7022 CDGA/P4A Bearing Product Overview & Core Advantages
The 7022 CDGA/P4A is a single-row angular contact ball bearing engineered for applications demanding ultra-high precision and exceptional rotational accuracy. Manufactured to P4A tolerance class, this bearing is designed to handle primarily axial loads in one direction, as well as combined radial and axial loads. Its extra light preload (Class A) minimizes deflection under operational stresses, ensuring smooth, precise performance. The bearing is universally matchable (SU), allowing for precise axial clearance control when mounted in pairs or sets. Constructed from high-grade chrome steel and featuring a lightweight phenolic cage, it is optimized for high-speed operation up to 10,000 rpm, making it ideal for the most demanding precision machinery.
7022 CDGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7022 | Basic bearing series and size designation (110mm bore, 170mm OD, 28mm width). | Defines the core bearing dimensions. |
| CDGA | Contact angle (15°) and preload specification (Extra Light, Class A). | Optimizes the bearing for high-speed and high-precision applications with minimal internal clearance. |
| P4A | Tolerance class, exceeding ABEC 7/ISO P4 standards. | Guarantees ultra-precise running accuracy and dimensional stability. |
7022 CDGA/P4A Bearing Structural Features & Performance Benefits
The performance of the 7022 CDGA/P4A is a direct result of its advanced construction:
- High Precision & Rigidity: The P4A tolerance class and extra light preload ensure minimal runout and high system rigidity, critical for maintaining accuracy under load.
- Optimized for High Speeds: The lightweight phenolic resin cage reduces centrifugal forces, while the 15° contact angle and precision-ground raceways enable stable operation at the limiting speed of 10,000 rpm.
- Superior Load Capacity: With a dynamic load rating of 24,975 lbf and a static load rating of 24,300 lbf, this bearing reliably handles significant combined loads.
- Universal Matchability (SU): This feature allows for precise axial play adjustment when bearings are mounted in pairs (back-to-back or face-to-face) or as a matched set of 3, simplifying assembly and optimizing performance.
7022 CDGA/P4A Bearing Typical Application Areas
The 7022 CDGA/P4A is specified for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Equipment: Internal and external grinding spindles.
- High-Frequency Motors and Spindles
- Medical and Dental Equipment: High-speed handpieces and scanners.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
