7206 ACD/P4ADFB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7206 ACD/P4ADFB Bearing Product Overview & Core Advantages
The 7206 ACD/P4ADFB is a precision duplex angular contact ball bearing specifically designed for applications requiring exceptional rotational accuracy and high rigidity. This matched set bearing features a Face-to-Face (DF) duplex arrangement and a Light preload (Class B), making it ideal for supporting combined radial and axial loads in both directions. Manufactured to P4A tolerance class, it delivers superior running accuracy and is optimized for high-speed operation up to 100,500 rpm, ensuring reliable performance in demanding precision machinery.
7206 ACD/P4ADFB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7206 | Basic bearing series and size designation (30mm bore, 62mm OD). |
| AC | Angular Contact ball bearing with a 25° contact angle. |
| D | Duplex (two bearings supplied as a matched set). |
| P4A | High Precision Tolerance Class, exceeding ABEC-7/ISO P4 standards for enhanced running accuracy. |
| DF | Face-to-Face arrangement of the duplex pair. This configuration provides high rigidity and is effective for moment loads. |
| B | Specifies a Light preload applied to the matched set, which minimizes axial play and improves system stiffness. |
7206 ACD/P4ADFB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex face-to-face (DF) arrangement creates a highly rigid bearing system capable of withstanding significant combined radial and axial loads from both directions, as well as moment loads. The light preload eliminates internal clearance, ensuring precise shaft positioning and reduced vibration.
- Superior High-Speed Performance: The phenolic resin cage is lightweight and possesses excellent sliding properties, contributing to lower friction and enabling the bearing to achieve its high limiting speed of 100,500 rpm. The optimized internal geometry further enhances high-speed stability.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, this bearing guarantees exceptional running accuracy and consistent performance essential for precision applications.
- Durable Construction: Both rings and balls are made from high-grade chrome steel, providing high fatigue resistance and long service life under demanding operating conditions.
7206 ACD/P4ADFB Bearing Typical Application Areas
The 7206 ACD/P4ADFB is engineered for high-performance applications where precision, speed, and rigidity are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes and Robotic Drives.
- High-Frequency Motors and Spindles.
- Medical Equipment: Dental handpieces, centrifuges.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments.
