7205 CD/P4ADGB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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7205 CD/P4ADGB Bearing Product Overview & Core Advantages
The 7205 CD/P4ADGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a universal matchable (SU) bearing supplied in a light preload (Class B) duplex set, it delivers superior performance in handling combined radial and axial loads. Manufactured to P4A tolerance class, this bearing offers extremely tight dimensional control for high-speed, high-rigidity applications such as precision spindles. Its optimized internal geometry and phenolic cage contribute to outstanding high-speed capability.
7205 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7205 | Basic bearing series: 25mm bore, 52mm OD, 30mm width |
| CD | 15° contact angle design with optimized internal clearance |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DGB | Universal matchable duplex set with light preload (Class B) |
7205 CD/P4ADGB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex bearing arrangement provides significantly increased stiffness compared to single bearings, making it ideal for applications requiring minimal deflection under combined loads. The 15° contact angle optimally handles both radial and axial loads simultaneously.
Precision Performance: Manufactured to P4A tolerance class with bore and outside diameter tolerances of -0.004mm to 0, this bearing ensures exceptional running accuracy and consistent performance in precision machinery.
High-Speed Capability: The phenolic resin cage and optimized internal design enable excellent high-speed performance with a limiting speed of 100,500 rpm. The cage provides superior strength-to-weight ratio and smooth operation at high rotational speeds.
Universal Matching Design: As a universal matchable (SU) bearing, any two bearings can be paired in various configurations (back-to-back, face-to-face, or tandem) without selective matching, simplifying installation and inventory management.
7205 CD/P4ADGB Bearing Typical Application Areas
- Machine Tool Spindles - High-precision machining centers and grinding spindles
- Precision Instrumentation - Measuring equipment and optical devices
- High-Speed Motors - Spindle motors and high-frequency applications
- Medical Equipment - Dental handpieces and surgical tools
- Aerospace Components - Guidance systems and precision actuators
