7220 CD/P4ADGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7220 CD/P4ADGA Bearing Product Overview & Core Advantages
The 7220 CD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and reliability. As a universal matchable (SU) bearing supplied in a pre-matched duplex set, it delivers superior performance in handling combined radial and axial loads. Manufactured to P4A tolerance class with an extra light preload (Class A), this bearing is engineered for high-speed operation and provides outstanding rotational precision and system rigidity.
7220 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7220 | Basic bearing series and size designation |
| CD | 15° contact angle design, optimized for high-speed applications |
| P4A | High precision tolerance class with enhanced dimensional and running accuracy |
| DGA | Universal matchable duplex set, pre-configured for optimal performance |
7220 CD/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex bearing arrangement creates a rigid support system capable of handling significant combined loads from multiple directions. With a 15° contact angle and premium chrome steel construction, it provides excellent resistance to both radial and axial forces.
Precision Performance: Manufactured to P4A tolerance standards with extra light preload, this bearing ensures minimal runout and vibration, making it ideal for high-precision applications. The precision-ground raceways and optimized bearing dimensions contribute to smooth operation and extended service life.
High-Speed Capability: Featuring a phenolic cage and optimized internal geometry, the bearing achieves exceptional limiting speeds up to 16,000 rpm. The universal matchable design allows for flexible mounting configurations while maintaining high-speed performance.
Thermal Stability: The phenolic cage material provides excellent dimensional stability across the operating temperature range from -30°C to 110°C, ensuring consistent performance under varying thermal conditions.
7220 CD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Instrumentation - Measuring equipment and laboratory instruments
- High-Speed Motors - Industrial motors and servo drives requiring precise positioning
- Aerospace Components - Guidance systems and aircraft instrumentation
- Medical Equipment - CT scanners and high-speed dental handpieces
- Robotics - Precision joints and articulation points in industrial robots
