S7009 CD/HCP4ADBB
Hybrid Ceramic Super Precision Bearings
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S7009 CD/HCP4ADBB Bearing Product Overview & Core Advantages
The S7009 CD/HCP4ADBB is a precision duplex angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This matched back-to-back arrangement provides superior stability under combined loads, simultaneously handling radial forces and bidirectional axial thrust. Manufactured to P4A tolerance class with ceramic balls and a phenolic cage, it delivers outstanding high-speed performance and operational reliability in compact installations.
S7009 CD/HCP4ADBB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7009 | Bearing series and size designation (45mm bore, 75mm OD) |
| CD | Duplex arrangement in Back-to-Back (DB) configuration |
| HC | Hybrid Ceramic construction (ceramic balls with steel rings) |
| P4A | High precision tolerance class for exceptional running accuracy |
| ADBB | Preloaded duplex set with Light preload / Class B |
S7009 CD/HCP4ADBB Bearing Structural Features & Performance Benefits
Enhanced Rigidity & Load Capacity: The back-to-back duplex arrangement creates a rigid bearing system that effectively resists moment loads and provides exceptional stability. With a 15° contact angle and ceramic balls, it delivers superior performance under combined radial and axial loads (dynamic rating: 10,530 lbf).
High-Speed Capability: The combination of hybrid ceramic construction and phenolic resin cage enables exceptional limiting speeds up to 46,000 rpm. The lightweight components reduce centrifugal forces, while the optimized cage design ensures stable operation at high rotational velocities.
Precision & Longevity: Manufactured to P4A tolerance standards with tight dimensional controls (bore tolerance: -0.004mm to 0), this bearing ensures minimal runout and vibration. The sealed design with factory-applied grease provides maintenance-free operation across a wide temperature range (-30°C to 110°C).
S7009 CD/HCP4ADBB Bearing Typical Application Areas
The S7009 CD/HCP4ADBB is ideally suited for high-performance applications requiring precision and speed, including:
- Machine Tool Spindles - High-speed machining centers and precision grinding equipment
- High-Frequency Motors - Spindle motors and servo drives requiring minimal vibration
- Precision Instrumentation - Medical devices, measuring equipment, and optical systems
- Aerospace Components - Gyroscopes, navigation systems, and auxiliary power units
- Robotics & Automation - High-precision robotic joints and positioning systems
