7202 CDGC/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7202 CDGC/P4A Bearing Product Overview & Core Advantages
The 7202 CDGC/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a universal matchable bearing supplied in a set of two, it enables precise preload configuration for optimal performance. This bearing excels at accommodating combined loads (radial and axial) simultaneously, making it ideal for high-speed spindles and other high-rigidity applications. Its P4A tolerance class ensures superior running accuracy, while the phenolic cage contributes to smooth operation at high speeds.
7202 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Specifies a 15° contact angle and indicates this is a universal matchable bearing designed to be mounted in pairs. |
| GC | Indicates a Moderate Preload (Class C), providing a balanced compromise between rigidity and operating temperature. |
| P4A | Denotes an ultra-high precision tolerance class with enhanced dimensional and running accuracy requirements. |
7202 CDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and 15° contact angle are optimized to support significant combined radial and axial loads. When mounted as a universal pair, the preload significantly increases system stiffness.
- Superior High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction, enabling smooth operation up to the limiting speed of 95,000 rpm. The open design facilitates efficient lubrication management.
- Precision Engineering: Manufactured to P4A tolerance standards, this bearing guarantees minimal runout and vibration, which is critical for applications requiring high rotational accuracy.
- Universal Matching: Supplied as a matched set of 2 bearings, they are designed for "universal" mounting (face-to-face or back-to-back), simplifying installation and ensuring consistent, pre-determined preload.
7202 CDGC/P4A Bearing Typical Application Areas
The 7202 CDGC/P4A is engineered for high-performance machinery where precision and speed are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, dental handpieces, and other small, high-speed spindles.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Robotics: Joints and actuators requiring high accuracy and rigidity.
