7013 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 7013 ACEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with ceramic balls and manufactured to P4A super precision tolerance, this bearing delivers superior high-speed capability and rigidity. Its 25° contact angle is optimized to handle significant combined loads, including radial and axial loads in one direction. As a Universal Matchable (SU) bearing, it can be precisely paired with another identical bearing to form a preloaded duplex set, ensuring maximum system stiffness and rotational accuracy in high-performance machinery.
7013 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7013 | Basic bearing series and size designation (65mm bore, 100mm OD, 18mm width) |
| AC | Angular Contact design with a 25° contact angle |
| EGA | Precision class designation (P4A super precision tolerance) |
| HC | Hybrid Ceramic construction (steel rings with ceramic balls) |
| P4A | Super precision tolerance class for exceptional running accuracy |
Structural Features and Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, enabling higher limiting speeds (31,000 rpm). The ceramic material provides excellent electrical insulation, reduced friction, and superior performance in high-temperature environments.
Super Precision Tolerance (P4A): Manufactured to the tightest dimensional and running accuracy standards, this bearing ensures minimal vibration and exceptional rotational precision, making it ideal for high-speed spindle applications.
Phenolic Resin Cage: The lightweight and robust phenolic cage contributes to smooth operation at high speeds and provides excellent dimensional stability under varying thermal conditions.
Universal Matching (SU): Each bearing is manufactured to universal matching standards, allowing any two bearings to be paired without selective matching, simplifying installation and ensuring optimal preload characteristics in duplex arrangements.
7013 ACEGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision lathes
- High-Speed Motors and Generators: Where electrical insulation and high rotational speeds are required
- Aerospace and Defense Systems: Gyroscopes, navigation systems, and auxiliary power units
- Semiconductor Manufacturing Equipment: Wafer handling robots and precision positioning stages
- Medical Equipment: High-speed dental handpieces and laboratory centrifuges
