7005 CDGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7005 CDGB/P4A Bearing Product Overview & Core Advantages
The 7005 CDGB/P4A is a single row angular contact ball bearing designed for exceptional precision and performance in demanding applications. Engineered to a P4A tolerance class, it offers superior running accuracy and dimensional stability. Its key advantage lies in its ability to support high combined loads, efficiently handling both radial and significant axial loads in one direction. The Universal Matchable (SU) designation allows for precise preload setting when mounted with other bearings, making it ideal for high-rigidity, high-speed spindles and other precision machinery.
7005 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7005 | Standard bearing series designation (25mm bore, 47mm OD). |
| C | Specifies a 15° contact angle, optimized for high-speed operation. |
| DGB | Indicates a Light preload (Class B) and that the bearing is part of a Universal Matchable (SU) set. |
| P4A | Denotes an ABEC 7 / ISO P4 tolerance class, ensuring extremely high precision for spindle applications. |
7005 CDGB/P4A Bearing Structural Features & Performance Benefits
High Precision & Rigidity: Manufactured to P4A tolerances, this bearing guarantees minimal runout and vibration. The phenolic cage and optimized internal geometry contribute to stable operation and high system rigidity, especially when used in matched sets.
Superior Load Capacity: The 15° contact angle is engineered to handle significant axial loads in addition to radial loads, making it suitable for applications with combined loads.
High-Speed Capability: The lightweight phenolic cage reduces centrifugal forces, while the precision-ground components and optimized internal clearance allow for a high limiting speed of 56,000 rpm, qualifying it as a true high-speed bearing.
Universal Matching: As a Universal Matchable (SU) bearing, it can be assembled with other bearings from the same lot to achieve a specific preload without selective mounting, simplifying installation and ensuring consistent performance.
7005 CDGB/P4A Bearing Typical Application Areas
The 7005 CDGB/P4A is specified for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and joints.
- High-Frequency Motors and Spindles: Motors for PCB drilling and other high-RPM applications.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and navigation instruments.
