7020 ACD/P4ADGA
7000 Series Super Precision Angular Contact Ball Bearings
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Main Dimensions
Ball & Washer Dimensions
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Materials
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7020 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 7020 ACD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a pre-matched duplex set, it enables simplified installation while ensuring optimal preload and alignment. Its P4A tolerance class guarantees superior dimensional and running accuracy, making it ideal for high-speed spindles and precision machinery. The bearing is capable of handling combined radial and axial loads simultaneously, with its 25° contact angle providing excellent thrust capacity.
7020 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| ACD | 25° contact angle, universal matchable duplex set | Optimized for combined loads and simplified mounting |
| P4A | High precision tolerance class (equivalent to ABEC 7) | Superior running accuracy and minimal vibration |
| DGA | Preloaded duplex set arrangement | Enhanced system rigidity and precise axial positioning |
7020 ACD/P4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Precision: The duplex bearing set with extra light preload (Class A) provides exceptional system stiffness, minimizing deflection under load while maintaining precise shaft positioning. The P4A tolerance class ensures consistent performance in demanding applications.
Superior Load Capacity: With a 25° contact angle and optimized internal geometry, this bearing effectively handles combined radial and axial loads. The radial dynamic load rating of 28,575 lbf and static load rating of 36,000 lbf demonstrate its robust load-carrying capability.
High-Speed Performance: The phenolic cage contributes to excellent high-speed capability with a limiting speed of 16,000 rpm. This material offers superior strength-to-weight ratio and smooth operation at elevated speeds.
Premium Material Construction: Manufactured from chrome steel for both rings and balls, the bearing delivers excellent wear resistance and fatigue life. The 22 precision balls with 15.875 mm diameter ensure optimal load distribution.
7020 ACD/P4ADGA Bearing Typical Application Areas
- Machine tool spindles - High-speed machining centers and grinding spindles
- Precision industrial pumps - Chemical processing and hydraulic systems
- High-speed compressors - Air and gas compression equipment
- Robotics and automation - Precision rotary tables and robotic joints
- Aerospace components - Guidance systems and auxiliary power units
- Medical equipment - Dental handpieces and imaging system rotors
