71922 FE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
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71922 FE/HCP4AQBCA Bearing Product Overview & Core Advantages
The 71922 FE/HCP4AQBCA is a precision quadruplex matched angular contact ball bearing designed for the most demanding high-performance applications. Engineered to a P4A super-precision tolerance class, it delivers exceptional rotational accuracy and running smoothness. Its core advantage lies in the back-to-back (QBC) arrangement of four bearings, creating an extremely rigid system capable of supporting complex combined loads (radial and axial) from multiple directions. The use of ceramic balls and a phenolic cage contributes to superior high-speed performance, reduced friction, and extended service life, making it ideal for high-rigidity, high-speed spindles.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD). |
| FE | Indicates a set of bearings with optimized internal geometry for enhanced performance. |
| HC | Hybrid Ceramic: Denotes the use of ceramic balls for high-speed and longevity benefits. |
| P4A | Super-precision tolerance class, tighter than ABEC 7/ISO P4, ensuring minimal runout and vibration. |
| QBC | Quadruplex Back-to-Back arrangement. Four bearings are precision-matched and mounted in a back-to-back configuration. |
71922 FE/HCP4AQBCA Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The quadruplex back-to-back (QBC) matched arrangement is the defining feature, providing an exceptionally stiff bearing system. This configuration effectively resists moment loads and supports heavy combined loads, making it suitable for applications where shaft deflection must be minimized.
Superior High-Speed Capability: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage significantly lowers operating temperatures and friction, enabling higher limiting speeds. The 18° contact angle is optimized for high-speed operation with substantial axial load capacity.
Precision and Longevity: Manufactured to P4A tolerance standards, this bearing ensures precise shaft positioning and smooth rotation. The hybrid ceramic construction offers increased resistance to wear and a longer operational life, especially in challenging environments.
71922 FE/HCP4AQBCA Bearing Typical Application Areas
This high-precision, high-rigidity bearing set is specifically engineered for advanced machinery requiring ultimate performance:
- High-Speed Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision Grinding Spindles
- High-performance Robotic Drives and Servo Motors
- Advanced Aerospace and Defense systems
- Specialized Medical Equipment spindles
