7020 CD/P4ADGD
7000 Series Super Precision Angular Contact Ball Bearings
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Basic Information
Main Dimensions
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7020 CD/P4ADGD Bearing Product Overview & Core Advantages
The 7020 CD/P4ADGD is a precision angular contact ball bearing designed for applications demanding exceptional rigidity and accuracy. This universal matchable (SU) bearing features a 15° contact angle and heavy preload (Class D), making it ideal for handling combined loads including significant axial and radial forces simultaneously. Manufactured to P4A tolerance class, it delivers superior running accuracy and rotational precision for high-performance machinery.
7020 CD/P4ADGD Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| CD | 15° contact angle with optimized internal design | Enhanced axial load capacity and stiffness |
| P4A | High precision tolerance class | Superior running accuracy and minimal vibration |
| D | Heavy preload classification | Maximum rigidity and precise shaft positioning |
| GD | Grease lubricated and sealed | Reduced maintenance and extended service life |
7020 CD/P4ADGD Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design with heavy preload provides exceptional stiffness, enabling the bearing to handle combined radial and axial loads efficiently. With a radial dynamic load rating of 30,375 lbf and static load rating of 38,250 lbf, it offers reliable performance under demanding conditions.
Precision Engineering: Manufactured to P4A tolerance standards with tight dimensional controls (bore tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration. The phenolic cage and 22 chrome steel balls (15.875 mm diameter) contribute to smooth operation and reduced friction.
Optimized Speed Performance: Despite the heavy preload, the bearing achieves a limiting speed of 20,000 rpm, making it suitable for high-speed applications. The universal matching capability allows for flexible bearing arrangements in precision spindle configurations.
Material Excellence: Constructed from chrome steel for both rings and balls, the bearing offers excellent wear resistance and durability across a temperature range of -30°C to 110°C.
7020 CD/P4ADGD Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles
- Industrial Pumps & Compressors: Applications requiring high rigidity and precision
- Precision Instrumentation: Measuring equipment and laboratory instruments
- Robotics & Automation: High-accuracy rotary tables and positioning systems
- Aerospace Components: Actuators and control systems demanding reliability
