7009 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7009 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7009 CD/HCP4ADGA is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing features a 15° contact angle and extra light preload (Class A), making it ideal for high-speed operation up to 46,000 rpm. Its ceramic balls and phenolic cage contribute to reduced friction, lower operating temperatures, and extended service life. This bearing is designed to handle combined loads efficiently, providing reliable performance in precision machinery.
7009 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Universal matchable bearing designed for duplex mounting |
| HC | Hybrid ceramic balls for enhanced performance |
| P4A | High precision tolerance class with specific running accuracy requirements |
| DGA | Preloaded bearing set designation |
7009 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride ceramic balls provides superior performance characteristics including reduced friction, higher stiffness, and improved high-speed capability. The ceramic balls also offer electrical insulation properties and better performance in contaminated environments.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore diameter tolerance: -0.004mm to 0, outside diameter tolerance: -0.004mm to 0), ensuring consistent performance and precise running accuracy.
Optimized Cage Design: The phenolic cage provides excellent strength-to-weight ratio, contributing to the bearing's high-speed performance while maintaining dimensional stability across the operating temperature range.
Universal Matchability: The SU designation allows for flexible mounting arrangements in duplex pairs, enabling precise preload control and optimal rigidity in application.
7009 CD/HCP4ADGA Bearing Typical Application Areas
- Machine tool spindles requiring high precision and speed
- High-speed machining centers and CNC equipment
- Precision instrumentation and measuring devices
- Semiconductor manufacturing equipment
- Aerospace components and navigation systems
- Medical equipment requiring reliable high-speed operation
- Robotic systems and automation equipment
