S7009 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S7009 CDGA/HCP4A Bearing Product Overview & Core Advantages
The S7009 CDGA/HCP4A is a high-precision, single-row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and speed. Its defining characteristic is the ceramic ball material (Silicon Nitride), which, combined with a phenolic cage and P4A super-precision tolerance class, enables superior performance. This bearing is designed to handle combined loads, primarily thrust loads in one direction, and is universally matchable (SU), allowing for precise preload control when mounted in pairs or sets. Its compact design, sealed construction, and pre-lubrication make it an ideal, high-reliability solution for high-speed spindles and precision machinery.
S7009 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| S7009 | Basic Bearing Series & Size | Denotes a 45mm bore, 75mm OD, 16mm width angular contact bearing series. |
| C | 15° Contact Angle | Optimized for high-speed operation with a balance of radial and axial load capacity. |
| DGA | Universal Matchable / Duplex Set | Indicates the bearing is ground for universal matching (SU), allowing for flexible mounting configurations (DB, DF, DT) to achieve specific preload and rigidity. |
| HCP4A | Hybrid Ceramic & Precision Class | HC: Hybrid Ceramic (Steel rings with ceramic balls). P4A: A super-precision tolerance class with enhanced running accuracy, tighter than ABEC 7. |
S7009 CDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The use of silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and provides electrical insulation. This directly contributes to a higher limiting speed (46,000 rpm), extended service life, and improved reliability in high-speed applications.
Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction at high speeds, further supporting the bearing's exceptional high-speed performance and smooth operation.
Super-Precision P4A Tolerances: With extremely tight bore, OD, and width tolerances, this bearing ensures minimal runout and superior rotational accuracy, which is critical for applications like machine tool spindles.
Sealed & Pre-Lubricated: The integrated seals protect against contamination and retain the factory-applied grease lubrication, making the bearing ready for immediate use and suitable for the specified temperature range (-30°C to 110°C) without initial maintenance.
S7009 CDGA/HCP4A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles: CNC milling, grinding, and drilling spindles where precision, speed, and rigidity are paramount.
- Precision Robotics: High-accuracy joints and arm assemblies requiring minimal backlash and high responsiveness.
- High-Frequency Electric Spindles: Applications in PCB drilling and small tool machining centers.
- Advanced Medical Equipment: High-speed rotors in dental handpieces and laboratory centrifuges.
- Aerospace Instrumentation: Gyroscopes and other navigation system components demanding high precision and reliability.
