7012 FEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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7012 FEGA/HCP4A Bearing Product Overview & Core Advantages
The 7012 FEGA/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. Engineered to accommodate combined loads (radial and axial), it features a single-row design with an 18° contact angle for optimal thrust capacity. Manufactured to P4A super-precision tolerance, it ensures minimal runout and vibration, making it ideal for high-speed operation up to 35,000 rpm. Its construction with a phenolic cage and ceramic balls contributes to its high rigidity, low friction, and extended service life in demanding environments.
7012 FEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| FE | Enhanced Ball Complement & Geometry | Optimized for higher load capacity and stiffness. |
| GA | Light Preload (Class A) | Reduces deflection, improves running accuracy and system rigidity. |
| HC | Hybrid Ceramic (Silicon Nitride Balls) | Enables higher speed capability, reduced heat generation, and longer life. |
| P4A | Super Precision Tolerance Class | Guarantees extreme dimensional and running accuracy for critical applications. |
7012 FEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, allowing for higher limiting speeds, lower operating temperatures, and superior performance in lubricant-starved conditions.
- Phenolic Resin Cage: This lightweight and robust cage material offers excellent dimensional stability at high speeds, contributing to smooth operation and reduced vibration.
- Precision Ground Geometry: The 18° contact angle and raceway geometry are precision-ground to P4A standards, ensuring consistent performance, high rigidity, and accurate load distribution.
- Universal Matchable (SU): This bearing is designed for universal matching (SU designation), allowing two bearings to be mounted together in a back-to-back (DB), face-to-face (DF), or tandem (DT) arrangement to handle complex load scenarios and moments.
- Optimized Lubrication: The bearing comes pre-lubricated, ensuring immediate and reliable operation from startup within its specified temperature range of -30°C to 110°C.
7012 FEGA/HCP4A Bearing Typical Application Areas
The 7012 FEGA/HCP4A is engineered for high-performance machinery where precision, speed, and reliability are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Aerospace & Defense Systems: Gyroscopes, radar platforms, and auxiliary power units.
- High-Speed Motors and Drives: Spindles for PCB drilling and semiconductor manufacturing equipment.
- Medical Equipment: High-speed dental handpieces and imaging scanner gantries.
