71912 FEGA/HCP4AL
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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71912 FEGA/HCP4AL Bearing Product Overview & Core Advantages
The 71912 FEGA/HCP4AL is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. As a single bearing designed for universal matching (SU), it enables simplified assembly into precisely preloaded sets. Its core advantages include superior running accuracy from its P4A tolerance class, high-speed capability facilitated by a lightweight phenolic cage and ceramic balls, and the ability to accommodate combined radial and axial loads with an 18° contact angle. This bearing is pre-lubricated and optimized for reliable operation in high-performance systems.
71912 FEGA/HCP4AL Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Significance |
|---|---|---|
| 71912 | Basic bearing designation | Defines the core dimensions: 60mm bore, 85mm OD, 13mm width. |
| FE | Machined brass cage design | Indicates a robust cage suitable for high-speed and high-temperature applications. |
| GA | Preload: Extra light (Class A) | Provides minimal internal clearance for high rigidity and precise shaft positioning. |
| HC | Hybrid Ceramic | Signifies the use of ceramic balls, offering reduced weight, lower friction, and longer service life. |
| P4A | Tolerance Class | Denotes a very high precision grade for applications requiring extreme running accuracy and low vibration. |
| L | Lubricated | The bearing is supplied with a performance-optimized grease for immediate operation. |
71912 FEGA/HCP4AL Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The use of ceramic balls with a chrome steel ring significantly reduces rotational mass and inertia, enabling higher limiting speeds (31,000 rpm). This construction also provides superior resistance to wear and a longer operational lifespan, especially in demanding conditions.
High Rigidity and Precision: The extra light preload (Class A) and P4A precision tolerance ensure minimal internal clearance. This results in exceptional shaft guidance, high system rigidity, and precise rotational accuracy, which is critical for applications like machine tool spindles.
Optimized for High-Speed Operation: The combination of the lightweight phenolic cage, low-friction ceramic balls, and optimized lubrication allows this bearing to achieve its high limiting speed with smooth and stable performance.
Universal Matchable Design (SU): As a universal matchable bearing, two identical 71912 FEGA/HCP4AL bearings can be mounted together in a back-to-back or face-to-face arrangement to form a preloaded set, simplifying inventory and assembly for complex bearing arrangements.
71912 FEGA/HCP4AL Bearing Typical Application Areas
The 71912 FEGA/HCP4AL is ideally suited for high-performance machinery where precision, speed, and reliability are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Articulated arms and high-accuracy positioning systems.
- High-Frequency Motors and Spindles: Where extreme rotational speeds are required.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and other critical rotating assemblies.
- Medical and Laboratory Equipment: Centrifuges and other high-speed diagnostic devices.
