S7009 ACD/P4ADGB
Sealed Super Precision Angular Contact Ball Bearings
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S7009 ACD/P4ADGB Bearing Product Overview & Core Advantages
The S7009 ACD/P4ADGB is a high-precision double row angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. Engineered to simultaneously handle combined radial and axial loads from both directions, this bearing features a compact design that saves space while delivering superior performance. Its P4A tolerance class ensures extremely tight dimensional and running accuracy, making it ideal for high-speed spindles and other precision machinery where minimal runout and vibration are critical. The phenolic cage and universal matching (SU) capability further enhance its high-speed performance and mounting versatility.
S7009 ACD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7009 | Basic bearing series, double row angular contact design |
| ACD | 25° contact angle, optimized for axial load capacity |
| P4A | Ultra-precision tolerance class, exceeding ABEC 7 standards |
| DGB | Universal Matchable (SU) arrangement, preloaded light (Class B) |
S7009 ACD/P4ADGB Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact design provides significantly higher rigidity compared to single row bearings, enabling stable operation under heavy combined loads. With a 25° contact angle, it efficiently supports substantial axial loads in both directions.
Superior High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 41,000 rpm. This makes the bearing exceptionally suitable for high-speed applications.
Precision & Longevity: Manufactured to P4A tolerance class, the bearing ensures minimal vibration and precise rotational accuracy. The sealed design with grease lubrication offers protection against contamination and provides reliable operation within a temperature range of -30°C to 110°C.
Simplified Installation: The Universal Matchable (SU) feature allows any two bearings to be mounted together without selective matching, simplifying assembly and reducing inventory requirements.
S7009 ACD/P4ADGB Bearing Typical Application Areas
The S7009 ACD/P4ADGB is ideally suited for high-performance machinery requiring precision and speed, including:
- Machine Tool Spindles (milling, grinding, and turning centers)
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Positioning Systems
