709 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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709 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 709 CD/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered to accommodate combined loads (simultaneous radial and axial loads), this bearing features a universal matchable (SU) design, allowing two bearings to be paired for optimal preload and stiffness in a back-to-back or face-to-face arrangement. Its construction with ceramic balls and a phenolic cage enables superior high-speed capability and reduced rotational mass. Pre-lubricated and built to P4A super precision tolerance standards, it delivers high rigidity and reliable operation in precision machinery.
709 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a universal matchable bearing designed with a specific contact angle for pairing (15° in this case). |
| HC | Signifies the use of Hybrid Ceramic balls, offering advantages in high-speed operation and longevity. |
| P4A | Denotes a super precision tolerance class, ensuring extremely tight dimensional and running accuracy for high-precision applications. |
| DGA | Specifies the use of a phenolic (polyamide) cage, contributing to low weight, high-speed suitability, and smooth operation. |
709 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The 15° contact angle and P4A tolerance class provide high running accuracy and system rigidity, essential for precise positioning and minimal deflection under load.
- Superior High-Speed Performance: The combination of hybrid ceramic balls and a lightweight phenolic cage (DGA) significantly reduces centrifugal forces, enabling a high limiting speed of 95,000 rpm.
- Universal Matching Capability (SU): The CD designation allows two bearings to be universally matched, simplifying installation and ensuring optimized preload for maximum stiffness and performance in paired sets.
- Optimized Load Capacity: The angular contact design efficiently handles combined radial and axial loads, with a dynamic load rating of 1287 lbf and a static load rating of 720 lbf.
- Pre-Lubricated for Immediate Use: The bearing comes pre-lubricated, ensuring immediate operation and reducing initial setup complexity.
709 CD/HCP4ADGA Bearing Typical Application Areas
The 709 CD/HCP4ADGA is ideally suited for high-performance applications where speed, precision, and rigidity are critical. Key industries and equipment include:
- High-Speed Spindles for CNC machining centers and precision grinding machines
- High-Frequency Motors and servo drives
- Precision Instrumentation and medical device components
- Aerospace Actuators and auxiliary power units
- Advanced Robotics and automation systems
