7007 CDGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7007 CDGB/P4A Bearing Product Overview & Core Advantages
The 7007 CDGB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. This single bearing features a Universal Matchable (SU) design, allowing it to be pre-stacked with other bearings to form a precisely preloaded set. Its key characteristics include the ability to accommodate combined loads (radial and axial), a light preload (Class B), and operation within a wide temperature range. Engineered for high-speed performance and superior running accuracy, it is an ideal solution for high-reliability, precision machinery.
7007 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Description | Technical Implication |
|---|---|---|
| 7007 | Basic Series & Size | 35 mm bore, 62 mm OD, 14 mm width. |
| C | Contact Angle | 15° contact angle, optimized for high-speed operation and axial load capacity. |
| DG | Universal Matchable | Universal Matchable (SU) bearing. Can be mounted in any combination (back-to-back, face-to-face, or tandem) with other SU bearings to achieve a specific preload. |
| B | Preload | Light preload (Class B). Reduces deflection and improves system rigidity. |
| P4A | Tolerance Class | High-precision P4A tolerance class, ensuring extremely tight dimensional and running accuracy tolerances. |
7007 CDGB/P4A Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The 15° contact angle and light preload work in concert to provide high system stiffness, minimizing deflection under load and ensuring precise rotational accuracy, which is critical for precision bearings.
Superior Load Capacity: Designed as an angular contact bearing, it efficiently supports combined loads (simultaneous radial and axial loads). The optimized internal geometry and high-grade chrome steel construction contribute to its dynamic and static load ratings.
Optimized High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, while the 15° contact angle reduces heat generation, enabling a high limiting speed of 56,000 rpm. The bearing is lubricated for immediate operation and long service life.
Universal Matching Capability: The Universal Matchable (SU) feature allows for simplified assembly of preloaded bearing sets, ensuring consistent performance and eliminating the need for selective matching.
7007 CDGB/P4A Bearing Typical Application Areas
The 7007 CDGB/P4A is ideally suited for high-precision, high-speed machinery where accuracy and rigidity are paramount. Key applications include:
- Machine Tool Spindles (milling, grinding, and lathe spindles)
- High-Frequency Spindle Motors
- Precision Robotic Drives and Joints
- Medical and Dental High-Speed Handpieces
- Advanced Aerospace Control Systems and Instrumentation
