7206 CDGB/P4A
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7206 CDGB/P4A Bearing Product Overview & Core Advantages
The 7206 CDGB/P4A is a super-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a single bearing with a 15° contact angle and Universal Matchable (SU) designation, it is engineered to handle combined loads—primarily thrust loads with significant radial loads. Its P4A tolerance class ensures ultra-precise dimensions and running accuracy, making it ideal for high-rigidity, high-reliability spindles and precision machinery. The light preload (Class B) minimizes deflection under operational forces, contributing to superior system stability.
7206 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7206 | Basic bearing series, indicating a metric angular contact ball bearing with a 30mm bore, 62mm OD, and 16mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed applications requiring high thrust load capacity. |
| DGB | Indicates a Universal Matchable (SU) bearing. Two such bearings can be mounted in a back-to-back (DB) or face-to-face (DF) arrangement to handle combined loads from both directions. |
| P4A | Denotes an ABEC 7 / ISO P4 tolerance class with additional running accuracy requirements, ensuring minimal vibration and exceptional performance in precision applications. |
7206 CDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and robust construction provide high rigidity, enabling the bearing to support significant combined radial and axial loads. The light preload eliminates internal clearance, enhancing system stiffness and positioning accuracy.
- Superior High-Speed Performance: Featuring a phenolic resin cage, this bearing is optimized for high-speed operation. The lightweight cage reduces centrifugal forces, contributing to a high limiting speed of 71,500 rpm. The standard lubrication is suitable for this demanding operational range.
- Exceptional Precision: Manufactured to P4A super-precision tolerances, this bearing guarantees tight control over bore, outside diameter, and width dimensions, resulting in smooth, quiet, and vibration-free rotation essential for precision equipment.
- Universal Matching Capability: The Universal Matchable (SU) feature allows for simplified mounting of multiple bearings in pre-determined arrangements (DB or DF) without selective matching, reducing assembly time and ensuring optimal preload and performance.
7206 CDGB/P4A Bearing Typical Application Areas
The 7206 CDGB/P4A is ideally suited 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 Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for electric motors and generators.
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges.
- Aerospace & Defense: Gyroscopes, radar systems, and other precision instrumentation.
