7206 ACDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7206 ACDGB/P4A Bearing Product Overview & Core Advantages
The 7206 ACDGB/P4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a single bearing with Universal Matchable (SU) designation, it can be mounted with other bearings from the same manufacturing lot to form a precisely preloaded set, eliminating the need for selective assembly. Its key advantages include the ability to accommodate combined loads (simultaneous radial and axial loads), superior running accuracy ensured by the P4A tolerance class, and high-speed capability facilitated by its phenolic cage and optimized internal geometry.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7206 | Basic bearing series and size designation (30mm bore, 62mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| DGB | Duplex arrangement, Back-to-Back mounting configuration. This specific bearing is ground for a Light preload (Class B) when paired. |
| P4A | Indicates a high-precision tolerance class with running accuracy requirements stricter than ABEC 7. |
7206 ACDGB/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design and robust construction enable the bearing to support significant combined loads. The specific contact angle and internal geometry are optimized for high axial load capacity in one direction.
High-Speed Performance: The lightweight and durable phenolic resin cage ensures stable operation and reduced centrifugal forces, contributing to the high limiting speed of 100,500 rpm. The open design allows for efficient lubrication management.
Precision and Universal Matching: Manufactured to P4A tolerance standards, this bearing guarantees minimal runout and vibration. The Universal Matchable (SU) feature allows for the creation of a preloaded set from a group of three bearings without selective matching, simplifying installation and ensuring consistent, high system rigidity.
7206 ACDGB/P4A Bearing Typical Application Areas
The 7206 ACDGB/P4A is ideally suited for high-performance machinery where precision, speed, and rigidity are paramount. Key applications include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
