7020 ACD/HCP4ADGB
Hybrid Ceramic Super Precision Bearings
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7020 ACD/HCP4ADGB Bearing Product Overview & Core Advantages
The 7020 ACD/HCP4ADGB is a precision angular contact ball bearing designed for high-performance applications requiring exceptional accuracy and reliability. This universally matchable (SU) bearing is configured in a duplex set of two bearings with a light preload (Class B), enabling it to handle combined loads—significant radial and axial loads in one direction—simultaneously. Its construction with a ceramic ball and phenolic cage contributes to superior high-speed capabilities and reduced weight, making it ideal for demanding, high-rigidity applications.
7020 ACD/HCP4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7020 | Basic bearing series, indicating a 100 mm bore, 150 mm OD, and 48 mm width. |
| ACD | Angular Contact design with a 25° contact angle. |
| HCP4A | Indicates high-precision P4A tolerance class and a phenolic (resin) cage. |
| DGB | Specifies a duplex set of two bearings arranged in a universal matchable (SU) configuration with light preload. |
7020 ACD/HCP4ADGB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex set arrangement and 25° contact angle provide high axial and radial stiffness, enabling stable operation under combined loads.
High-Speed Performance: The combination of a lightweight phenolic cage and ceramic balls reduces centrifugal forces, allowing for a high limiting speed of 21,000 rpm.
Precision & Accuracy: Manufactured to P4A tolerance class with tight dimensional control on bore diameter, outside diameter, and width, ensuring precise shaft positioning and smooth rotation.
Reduced Maintenance: The bearing is pre-lubricated and features an open seal type, suitable for applications where specific lubrication systems are in place.
7020 ACD/HCP4ADGB Bearing Typical Application Areas
The 7020 ACD/HCP4ADGB is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles
- High-Frequency Motors
- Aerospace Actuation Systems
- Precision Grinding Equipment
- Robotic Joints and Drives
