7020 CDGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7020 CDGB/P4A Bearing Product Overview & Core Advantages
The 7020 CDGB/P4A is a single row angular contact ball bearing engineered for applications demanding high precision and superior running accuracy. Operating under the stringent P4A tolerance class, this bearing is designed to handle significant axial loads in one direction, making it ideal for high-speed spindles and precision machinery. Its universal matchable (SU) design allows for flexible mounting in various preloaded configurations, offering exceptional rotational accuracy and system rigidity.
7020 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7020 | Basic bearing series, indicating a 100 mm bore and 150 mm outside diameter. |
| C | Specifies a 15° contact angle, optimized for high axial load capacity. |
| DGB | Indicates a Light preload (Class B) and that the bearing is part of a Universal Matchable (SU) set. |
| /P4A | Denotes a high precision tolerance class with very tight running accuracy and dimensional limits. |
7020 CDGB/P4A Bearing Structural Features & Performance Benefits
High-Speed Capability: The phenolic resin cage ensures low friction and excellent dimensional stability at high rotational speeds, contributing to the bearing's limiting speed of 20,000 rpm.
Precision & Rigidity: Manufactured to P4A tolerance class with a 15° contact angle, this bearing provides exceptional running accuracy and system stiffness, which is critical for minimizing deflection in precision spindles.
Axial Load Capacity: The angular contact design is optimized to carry substantial axial loads in one direction, making it a robust choice for applications with significant thrust forces.
Universal Matching: As a Universal Matchable (SU) bearing, it can be mounted in tandem, back-to-back, or face-to-face arrangements with other SU bearings to achieve specific preload and rigidity requirements without selective matching.
7020 CDGB/P4A Bearing Typical Application Areas
The 7020 CDGB/P4A is ideally suited for high-performance machinery where precision and speed are paramount. Key application areas include:
- Machine Tool Spindles (e.g., CNC milling, grinding, and turning centers)
- High-Speed Machining Centers
- Precision Grinding Spindles
- High-Frequency Motors
