7022 ACE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 7022 ACE/HCP4ADGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional rotational accuracy and reliability. This universal matchable bearing features a P4A tolerance class and is designed to accommodate combined loads, including significant axial loads in one direction. Its construction with a phenolic cage and ceramic balls enables superior high-speed performance and reduced operating temperatures, making it ideal for precision spindles and other high-rotation machinery.
7022 ACE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7022 | Basic bearing series, indicating a 110 mm bore and 170 mm outside diameter. |
| ACE | Angular Contact design with a 25° contact angle. |
| HC | Hybrid Ceramic, indicating ceramic balls for enhanced performance. |
| P4A | High-precision tolerance class, superior to ABEC 7. |
| DGA | Universal Matchable (SU) designation, allowing for flexible mounting configurations in pairs. |
Structural Features and Performance Benefits
- High Rigidity and Load Capacity: The 25° contact angle and robust construction enable the bearing to handle significant combined radial and axial loads, providing stable and rigid support for precision shafts.
- Exceptional High-Speed Capability: The combination of a lightweight phenolic cage and low-density ceramic balls reduces centrifugal forces, allowing for a high limiting speed of 16,250 rpm and lower vibration levels.
- Precision Performance: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, ensuring minimal runout and superior rotational accuracy.
- Universal Matching Design: As a Universal Matchable (SU) bearing, it can be paired in various preload configurations (back-to-back, face-to-face, or tandem) to optimize system stiffness and performance without selective matching.
7022 ACE/HCP4ADGA Bearing Typical Application Areas
This precision bearing is ideally suited for applications requiring high speed, accuracy, and reliability, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Medical Equipment: Dental handpieces and surgical drill motors.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
- High-Frequency Motors and Spindles: Where minimal thermal expansion and high rotational accuracy are critical.
