7020 CD/P4ADGB
7000 Series Super Precision Angular Contact Ball Bearings
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7020 CD/P4ADGB Bearing Product Overview & Core Advantages
The 7020 CD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4A tolerance class, this bearing is optimized to handle combined loads (radial and axial) simultaneously. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, simplifying installation and ensuring optimal performance. With a light preload (Class B) and a 15° contact angle, it delivers high running accuracy and is ideally suited for high-speed operation and high-reliability scenarios.
7020 CD/P4ADGB 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. |
| C | Designates a 15° contact angle. |
| D | Indicates the bearing is part of a universally matchable (SU) pair. |
| P4A | Specifies a very high precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DB | Specifies a back-to-back (DB) mounting arrangement for the matched set. |
7020 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The optimized internal geometry, including a 15° contact angle and high-grade chrome steel components, provides excellent resistance to deformation under combined loads. The universal matchable (SU) design, when mounted in a back-to-back (DB) arrangement, creates a highly rigid bearing system capable of withstanding moment loads.
- Superior High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, reduces friction, and contributes to a high limiting speed of 20,000 rpm. The open design facilitates efficient lubrication and heat dissipation.
- Exceptional Precision: Manufactured to P4A tolerance class with tight dimensional control on the bore, outside diameter, and width, this bearing ensures minimal runout and vibration for ultra-smooth operation in precision machinery.
- Optimized Internal Design: With 22 balls of 15.875 mm diameter, the bearing achieves an optimal balance between load capacity and speed capability.
7020 CD/P4ADGB Bearing Typical Application Areas
The 7020 CD/P4ADGB is engineered for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles
- Medical and Laboratory Equipment: Centrifuges and imaging devices.
- Aerospace Actuation Systems
