71911 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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71911 CEGA/HCP4A Bearing Product Overview & Core Advantages
The 71911 CEGA/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. As a single bearing with universal matching capability, it can be paired with another identical bearing to form a preloaded duplex set, offering superior rigidity and rotational accuracy. Its key advantages include the ability to handle combined loads (radial and axial), operation at high speeds (up to 34,000 rpm), and outstanding dimensional stability due to its P4A tolerance class. The use of a phenolic cage and ceramic balls contributes to its high-speed capability and extended service life.
71911 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71911 | Basic bearing series and size designation (55mm bore, 80mm OD, 13mm width) |
| C | 15° contact angle, optimized for high-speed applications |
| E | Optimized internal design for enhanced performance |
| GA | Universal Matchable (SU) bearing, can be paired for preloaded arrangements |
| HC | Hybrid Ceramic bearing with ceramic balls and steel rings |
| P4A | High precision tolerance class with enhanced running accuracy |
71911 CEGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, wear, and heat generation, enabling higher limiting speeds and longer service life compared to all-steel bearings.
Phenolic Cage Design: The lightweight phenolic resin cage provides excellent dimensional stability at high speeds and offers superior guidance for the ceramic balls, contributing to smooth operation and reduced vibration.
Precision Engineering: Manufactured to P4A tolerance class, this bearing ensures minimal runout and exceptional rotational accuracy, making it ideal for precision applications.
Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be universally paired with another identical bearing to create a preloaded set (DB, DF, or DT arrangement) without selective matching, simplifying installation and ensuring optimal performance.
High-Speed Performance: The 15° contact angle, hybrid construction, and phenolic cage work in synergy to achieve a remarkable limiting speed of 34,000 rpm.
71911 CEGA/HCP4A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles for milling, grinding, and drilling
- Precision Medical Equipment such as dental handpieces and surgical tools
- Aerospace & Defense Systems including gyroscopes and navigation instruments
- Semiconductor Manufacturing Equipment requiring ultra-clean, high-speed rotation
- High-Frequency Motors and Spindles in industrial automation
- Turbocharger Systems and other high-RPM automotive applications
