S71920 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S71920 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The S71920 CD/HCP4ADGA is a super-precision angular contact ball bearing engineered for the most demanding high-performance applications. This universally matchable (SU) bearing is designed to handle combined loads—significant radial and axial loads in both directions—simultaneously. Its P4A tolerance class ensures exceptional running accuracy, while the combination of a phenolic cage and ceramic balls enables superior high-speed capabilities and minimal heat generation. This bearing is the ideal solution for machine tool spindles and other high-precision machinery requiring maximum rigidity, speed, and operational reliability.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S | Super-precision bearing |
| 71920 | Basic bearing series and size designation (100mm bore, 140mm OD, 40mm width) |
| C | 15° contact angle |
| D | Enhanced internal design for high stiffness and speed |
| HC | Hybrid Ceramic (Silicon Nitride balls) |
| P4A | High-precision tolerance class (exceeds ABEC 7) |
| ADGA | Universal Matchable (SU) arrangement with extra light preload (Class A) |
S71920 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The optimized internal geometry and 15° contact angle provide exceptional stiffness, enabling the bearing to support high combined radial and axial loads with minimal deflection.
- Superior High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic balls reduce centrifugal forces and friction, allowing for a very high limiting speed of 16,250 rpm.
- Extended Service Life & Reliability: Hybrid ceramic construction offers superior resistance to wear and thermal degradation. The bearings are universally matchable, allowing for simplified mounting in duplex sets (back-to-back or face-to-face) to achieve optimal preload and system performance.
- Precision & Thermal Stability: Manufactured to P4A tolerance class with strict dimensional control, this bearing ensures high running accuracy. The phenolic cage and ceramic balls contribute to stable operation across the specified temperature range.
S71920 CD/HCP4ADGA Bearing Typical Application Areas
This high-precision angular contact ball bearing is specifically designed for applications where extreme accuracy, high speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving, and semiconductor manufacturing equipment.
- High-Frequency Motors: Spindles for routers and other high-RPM electric motors.
- Aerospace & Defense: Gyroscopes, radar systems, and other critical navigation and control systems.
