S7009 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7009 CD/HCP4A Bearing Product Overview & Core Advantages
The S7009 CD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional speed, rigidity, and accuracy. As a single-row bearing with a 15° contact angle, it is optimized to handle combined loads, accommodating significant radial loads and one-directional axial loads simultaneously. Its defining features include a P4 (ABEC-7) tolerance class for superior running accuracy, a phenolic resin cage for high-speed capability, and ceramic balls that reduce centrifugal forces, lower operating temperatures, and extend service life. Pre-lubricated and sealed, this bearing offers a compact, high-performance solution for high-reliability machinery.
S7009 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7009 | Basic bearing series designation, indicating a metric, single-row angular contact design with a 45mm bore. |
| C | Specifies a 15° contact angle, optimized for high-speed operation. |
| D | Indicates the bearing is part of a matched set for precise preload and rigidity. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride), offering superior speed and durability. |
| P4A | Denotes an ABEC-7 / P4 precision tolerance class, ensuring minimal runout and vibration. |
S7009 CD/HCP4A Bearing Structural Features & Performance Benefits
- High-Speed Performance: The combination of a lightweight phenolic cage and low-density ceramic balls significantly reduces centrifugal forces and friction, enabling a high limiting speed of 22,000 rpm.
- Enhanced Rigidity and Load Capacity: The 15° contact angle and availability of preload provide high axial and radial stiffness, effectively handling combined loads with a dynamic load rating of 6435 lbf.
- Superior Running Accuracy: Manufactured to P4 tolerance standards, this bearing ensures exceptional rotational accuracy and low noise levels, which is critical for precision applications.
- Long-Term Reliability: The sealed design retains lubricant and excludes contaminants, while the hybrid ceramic construction offers excellent resistance to wear and a wide operating temperature range from -30°C to 110°C.
S7009 CD/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles
- High-Speed Motors and Spindles
- Precision Robotics and Automation Equipment
- Aerospace Actuators and Control Systems
- Medical and Dental Equipment Drives
