7020 CDGC/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7020 CDGC/P4A Bearing Product Overview & Core Advantages
The 7020 CDGC/P4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. Designed as a single bearing with a 15° contact angle and Moderate (Class C) preload, it delivers superior performance under combined radial and axial loads. Its P4A tolerance class ensures ultra-precise running, making it ideal for high-speed spindles and other high-reliability machinery where minimal runout and vibration are critical.
7020 CDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7020 | Standard bore diameter (100 mm) and outside diameter (150 mm) dimensions. |
| CD | Contact angle of 15°. |
| GC | Indicates a Moderate preload (Class C) for optimized stiffness and thermal stability. |
| P4A | Denotes an ultra-precision tolerance class with extremely tight dimensional and running accuracy tolerances. |
7020 CDGC/P4A Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The angular contact design and Class C preload provide high system rigidity, enabling the bearing to effectively handle combined loads. With a dynamic load rating of 18,720 lbf and a static load rating of 19,125 lbf, it offers robust performance in demanding conditions.
High-Speed Performance: The lightweight phenolic resin cage ensures excellent dimensional stability and low friction, contributing to the high limiting speed of 20,000 rpm. This makes it suitable for high-speed applications.
Precision Engineering: Manufactured to P4A tolerance standards with a tight bore and outside diameter tolerance of -0.004mm to 0, this bearing guarantees minimal vibration and superior running accuracy.
Universal Matching: Designed as a Universal Matchable (SU) bearing, it can be universally paired with other bearings of the same type in sets (e.g., duplex pairs) without selective matching, simplifying installation and inventory.
7020 CDGC/P4A Bearing Typical Application Areas
The 7020 CDGC/P4A is ideally suited for high-precision and high-speed machinery, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace Control Systems
