S7009 ACB/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7009 ACB/HCP4ADGA Bearing Product Overview & Core Advantages
The S7009 ACB/HCP4ADGA is a high-precision double row angular contact ball bearing engineered for superior performance in demanding applications. Its design enables it to simultaneously handle significant combined loads (radial and bidirectional axial loads) with exceptional stability. Featuring a universal matchable (SU) design and a P4A super-precision tolerance, this bearing delivers outstanding running accuracy, high rigidity, and reliable operation in high-speed scenarios, making it an ideal choice for advanced machinery requiring maximum reliability and precision.
S7009 ACB/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7009 | Basic bearing series and size designation (45mm bore, 75mm OD). |
| ACB | Angular Contact Bearing with a 25° contact angle. |
| HCP4A | Indicates P4A super-precision tolerance class and likely specific internal design features for high accuracy. |
| DGA | Signifies a sealed unit, pre-lubricated with grease, offering protection against contamination and enabling maintenance-free operation. |
S7009 ACB/HCP4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row design provides a significantly wider effective spread than single row bearings, resulting in exceptional rigidity and the ability to support heavy combined loads and moment loads.
Super-Precision & High-Speed Performance: Manufactured to P4A tolerance standards with a phenolic resin cage, this bearing ensures minimal vibration and excellent running accuracy. The optimized internal geometry and lightweight cage contribute to a high limiting speed of 41,000 rpm.
Advanced Material Technology: The use of ceramic balls (typically Silicon Nitride) reduces centrifugal forces, lowers operating temperature, and increases bearing life, especially in high-speed applications. The rings are made from high-grade chrome steel for durability.
Maintenance-Free Operation: The integrated seals and factory-applied grease lubrication protect the bearing from contaminants and retain lubricant, ensuring long service life without the need for re-lubrication within the specified temperature range (-30°C to 110°C).
S7009 ACB/HCP4ADGA Bearing Typical Application Areas
This high-performance bearing is ideally suited for applications requiring high precision, speed, and rigidity, including:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Industrial Pumps & Compressors
- High-Frequency Motors and Spindles
- Robotics and Automation Equipment
- Aerospace & Defense Instrumentation
