7030 CDGB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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7030 CDGB/P4A Bearing Product Overview & Core Advantages
The 7030 CDGB/P4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Manufactured to P4A tolerance class, this bearing offers superior dimensional stability and running accuracy. Its 15° contact angle and Universal Matchable (SU) design make it ideal for preloaded arrangements in high-speed spindles, enabling it to handle significant combined loads (radial and axial) simultaneously. The light preload (Class B) ensures minimal deflection under operational stresses, making it a critical component for high-reliability, precision machinery.
7030 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7030 | Standard bore diameter (150 mm) and outside diameter (225 mm) dimensions. |
| C | 15° nominal contact angle, optimized for high-speed operation and moderate axial loads. |
| DGB | Universal Matchable (SU) bearing designed for preloaded duplex arrangements. Two bearings are ground to a specific offset so that when paired face-to-face (DF), back-to-back (DB), or in tandem (DT), they develop a predetermined light preload. |
| P4A | High-precision tolerance class, with enhanced running accuracy and dimensional tolerances beyond ABEC 7/ISO P4 standards. |
7030 CDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and phenolic cage provide a robust structure capable of supporting high combined loads. With a dynamic load rating of 38,700 lbf and a static load rating of 42,750 lbf, it ensures long-term operational stability in demanding conditions.
- Optimized High-Speed Performance: The lightweight phenolic cage and 15° contact angle are engineered for reduced centrifugal forces and friction, enabling a high limiting speed of 11,000 rpm. This makes it suitable for high-speed spindle applications.
- Precision Engineering: Manufactured to P4A tolerance class with tight bore, outside diameter, and width tolerances, this bearing guarantees exceptional running accuracy and minimal vibration, which is critical for precision machining and instrumentation.
- Universal Matching Capability: As a Universal Matchable (SU) bearing, it simplifies the assembly of preloaded duplex sets, ensuring consistent performance and ease of installation in matched arrangements.
7030 CDGB/P4A Bearing Typical Application Areas
The 7030 CDGB/P4A is engineered for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and laboratory equipment.
- High-Frequency Motors: Spindles for PCB drilling and routing.
- Robotics: High-accuracy robotic arm joints and rotary tables.
