7005 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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7005 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 7005 CD/HCP4ADGA is a precision angular contact ball bearing engineered for the most demanding high-performance applications. This universal matchable (SU) bearing is designed to accommodate combined loads—significant radial and axial loads in both directions—simultaneously. Its extra light preload (Class A) and P4A super-precision tolerance ensure exceptional running accuracy, minimal vibration, and high system rigidity. The combination of a phenolic cage and ceramic balls facilitates superior high-speed performance and extended service life, making it an ideal solution for spindles and other critical machinery components.
7005 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| CD | 15° contact angle and universal matchable design (SU). | Optimized for combined loads and allows for flexible mounting arrangements in pairs. |
| HC | Hybrid Ceramic (Ceramic balls with steel rings). | Enables higher speeds, reduces friction, and increases bearing life, especially in lubricant-starved conditions. |
| P4A | Super Precision Tolerance Class. | Guarantees extremely tight dimensional and running accuracy for applications requiring the highest level of precision. |
| DGA | Phenolic (Polyamide) Cage. | Provides excellent high-speed capability, low friction, and is suitable for high operating temperatures. |
7005 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design with a 15° contact angle provides robust support against combined loads, ensuring high system stiffness and stability under operation.
- Superior High-Speed Performance: The lightweight phenolic cage (DGA) and low-density ceramic balls (HC) significantly reduce centrifugal forces, enabling a very high limiting speed of 103,000 rpm (grease).
- Precision and Accuracy: Manufactured to P4A tolerance class with an extra light preload, this bearing delivers exceptional running accuracy, low noise, and minimal heat generation.
- Extended Service Life: The hybrid ceramic construction offers superior wear resistance and durability, withstanding a broad temperature range from -30°C to 110°C.
7005 CD/HCP4ADGA Bearing Typical Application Areas
The 7005 CD/HCP4ADGA is specified for high-end machinery where precision, speed, and reliability are paramount. Key application areas include:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Robotics and Automation Arms
- High-Frequency Motors and Spindle Drives
- Aerospace & Defense Instrumentation
- Medical Equipment (e.g., Dental handpieces, Centrifuges)
