7020 ACE/HCP4AH1DT
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7020 ACE/HCP4AH1DT Bearing Product Overview & Core Advantages
The 7020 ACE/HCP4AH1DT is a precision angular contact ball bearing supplied as a duplex tandem (DT) matched set. Engineered for applications demanding exceptional accuracy and rigidity, this bearing is characterized by its P4A super-precision tolerance class and ability to accommodate high combined loads. The combination of a chrome steel ring, ceramic balls, and a phenolic cage enables superior high-speed performance and operational stability, making it an ideal choice for high-reliability, high-performance spindle systems.
7020 ACE/HCP4AH1DT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7020 | Basic bearing series and size designation | Defines the core bearing dimensions: 100mm bore, 150mm OD, 48mm width |
| ACE | Internal design code (Contact Angle, internal clearance/Preload) | Indicates a 25° contact angle and optimized internal geometry for high rigidity |
| HC | Hybrid Ceramic | Signifies the use of ceramic balls for reduced friction, higher speed capability, and longer service life |
| P4A | Tolerance Class | Denotes super-precision dimensional and running accuracy, exceeding ABEC 7/ISO P4 standards |
| H1 | Preload Specification | Specifies a light preload category for enhanced system stiffness and rotational accuracy |
| DT | Duplex Tandem Arrangement | Indicates a matched set of two bearings mounted in tandem to maximize axial load capacity in one direction |
7020 ACE/HCP4AH1DT Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The duplex tandem (DT) arrangement of two preloaded bearings creates an exceptionally stiff bearing system, capable of handling significant combined radial and axial loads. The 25° contact angle is optimized for high thrust load capacity.
Superior High-Speed Performance: The hybrid ceramic construction (steel rings with ceramic balls) significantly reduces centrifugal forces and friction, enabling a high limiting speed of 20,000 rpm. The lightweight phenolic resin cage further enhances high-speed stability and reduces cage wear.
Precision and Longevity: Manufactured to P4A super-precision tolerances, this bearing ensures minimal runout and vibration for ultra-precise applications. The inherent properties of ceramic balls, including hardness, low thermal expansion, and electrical non-conductivity, contribute to extended service life and consistent performance.
7020 ACE/HCP4AH1DT Bearing Typical Application Areas
The 7020 ACE/HCP4AH1DT is engineered for the most demanding high-speed and high-precision machinery, including:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines.
- Precision Spindles: PCB drilling spindles, jig grinder spindles, and other applications requiring extreme rotational accuracy.
- High-Frequency Motors: Spindles for high-RPM electric motors and generators.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and other critical rotating assemblies.
