7217 CDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7217 CDGC/P4A Bearing Product Overview & Core Advantages
The 7217 CDGC/P4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. As a single bearing with a 15° contact angle and Moderate (Class C) preload, it is optimized to handle combined loads—simultaneously supporting significant radial and axial forces. Manufactured to the stringent P4A tolerance class, this bearing ensures superior running accuracy and is universally matchable (SU), allowing for precise axial play adjustment when mounted with other bearings. Its phenolic cage and factory-applied lubrication contribute to reliable, high-speed operation up to 17,000 rpm, making it an ideal component for high-performance machinery.
7217 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7217 | Basic bearing series; 85 mm bore, 150 mm OD, 28 mm width. |
| CD | Contact angle designation (15°). |
| GC | Indicates Moderate preload (Class C) for enhanced rigidity. |
| P4A | High precision tolerance class, exceeding ABEC 7 standards for superior running accuracy. |
7217 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The optimized 15° contact angle and factory-set preload provide high system rigidity, enabling the bearing to effectively handle combined radial and axial loads with a dynamic load rating of 22,388 lbf and a static load rating of 19,800 lbf.
- Superior High-Speed Performance: The lightweight and robust phenolic resin cage ensures stable operation and reduced centrifugal forces, supporting a high limiting speed of 17,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on the bore, outside diameter, and width, guaranteeing exceptional running accuracy and minimal vibration.
- Universal Matching Capability (SU): Designed as a universally matchable bearing, it can be paired with other bearings in various arrangements (e.g., back-to-back, face-to-face) to achieve the desired preload and system stiffness.
7217 CDGC/P4A Bearing Typical Application Areas
The 7217 CDGC/P4A is ideally suited for high-precision, high-speed applications across various industries, including:
- Machine Tool Spindles
- High-Frequency Electric Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace and Defense Actuation Systems
