7030 CD/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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7030 CD/P4ADBA Bearing Product Overview & Core Advantages
The 7030 CD/P4ADBA is a precision duplex angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement provides superior stability and is preloaded to Extra light / Class A specifications, ensuring minimal axial and radial play for high-precision operations. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high rigidity, making it ideal for demanding, high-speed machinery. Manufactured to a P4A tolerance class, it guarantees exceptional dimensional and running accuracy.
7030 CD/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7030 | Basic bearing designation indicating the size series and bore diameter (150 mm). |
| C | Designates a 15° contact angle, optimized for high-speed performance and axial load capacity. |
| D | Indicates the bearing is part of a duplex (matched) set. |
| P4A | Specifies the tolerance class, denoting very high precision for both dimensional and running accuracy. |
| DB | Specifies the Back-to-Back arrangement of the matched pair, which provides high moment rigidity. |
| A | Denotes the specific preload level: Extra light (Class A). |
7030 CD/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread, significantly increasing the bearing's resistance to moment loads and providing exceptional system rigidity.
- Superior Load Capacity: Engineered with a 15° contact angle and high-grade chrome steel components, this bearing efficiently handles significant combined radial and axial loads.
- Optimized High-Speed Performance: The lightweight, durable phenolic cage minimizes centrifugal forces and friction, contributing to a high limiting speed of 11,000 rpm. The preload ensures stable operation at high rotational speeds.
- Precision Engineering: Manufactured to P4A tolerance class with extremely tight bore, outside diameter, and width tolerances, this bearing ensures precise shaft positioning and smooth, quiet running.
- Pre-lubricated: Comes lubricated from the factory, ready for immediate installation and initial operation.
7030 CD/P4ADBA Bearing Typical Application Areas
The 7030 CD/P4ADBA is engineered for high-performance applications where precision, speed, and rigidity are critical. Typical uses include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Grinding Spindles: Applications requiring ultra-fine surface finishes.
- High-Frequency Motors and Spindles: Where minimal runout and high rotational accuracy are mandatory.
- Industrial Pumps and Compressors: For robust performance under combined loads.
- Advanced Robotics and Automation: Precision joints and rotary axes.
