71914 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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71914 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The 71914 CD/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universal matchable bearing features a P4A tolerance class and a 15° contact angle, optimized to handle combined radial and axial loads simultaneously. Its construction with a phenolic cage and ceramic balls enables superior high-speed capabilities and minimal thermal expansion, making it ideal for high-reliability, precision machinery where rigidity and rotational accuracy are paramount.
71914 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71914 | Basic bearing series and size designation (70mm bore, 100mm OD) |
| CD | 15° contact angle and optimized internal design for high-speed operation |
| HC | Hybrid Ceramic construction (ceramic balls with steel rings) |
| P4A | High precision tolerance class exceeding ABEC 7/ISO P4 standards |
| DGA | Universal Matchable (SU) designation for preloaded duplex arrangements |
71914 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (27,000 rpm) and extended service life compared to all-steel bearings.
High Rigidity & Load Capacity: The angular contact design with a 15° contact angle provides excellent resistance to combined loads, offering a dynamic load rating of 12,578 lbf and static load rating of 15,300 lbf. The universal matchable (SU) feature allows for precise preload control in duplex sets.
Optimized High-Speed Performance: The phenolic resin cage ensures low weight, excellent dimensional stability, and reduced centrifugal forces at high rotational speeds. The open design facilitates efficient lubrication and heat dissipation.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), this bearing delivers exceptional running accuracy and minimal vibration for precision applications.
71914 CD/HCP4ADGA Bearing Typical Application Areas
This high-performance bearing is specifically engineered for:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines
- Precision Medical Equipment: Dental handpieces, surgical tools, and laboratory centrifuges
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- High-Speed Automation: Robotics, pick-and-place systems, and semiconductor manufacturing equipment
- Professional Power Tools: High-frequency routers and precision drills
