7013 FE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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7013 FE/HCP4AQBCA Bearing Product Overview & Core Advantages
The 7013 FE/HCP4AQBCA is a high-precision quadruplex matched set of angular contact ball bearings designed for the most demanding applications. This metric system bearing is characterized by its extra light preload (Class A) and P4A super-precision tolerance, ensuring exceptional running accuracy and minimal vibration. Its core advantage lies in the back-to-back (QBC) arrangement of four bearings, which provides superior stiffness and the ability to withstand combined loads (significant radial and bidirectional axial loads) simultaneously. The use of ceramic balls and a phenolic cage contributes to lower friction, higher limiting speed, and extended service life, making it an ideal solution for high-speed, high-rigidity spindle systems.
7013 FE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7013 | Basic bearing series and size designation. | Defines the standard boundary dimensions: 65mm bore, 100mm OD, 72mm width. |
| FE | Precision class and internal design code. | Indicates a super-precision P4A tolerance and a specific internal geometry optimized for high performance. |
| HC | Hybrid Ceramic designation. | Signifies the use of ceramic balls, which reduce weight, friction, and heat generation, enabling higher speeds. |
| P4A | Tolerance Class. | Denotes a super-precision grade with very tight dimensional and running accuracy tolerances. |
| QBC | Matched Arrangement. | Stands for Quadruplex Back-to-Back. This is a set of four bearings mounted in a back-to-back configuration to handle complex load conditions and provide maximum system rigidity. |
| A | Preload Class. | Specifies Extra Light Preload, which minimizes friction and heat for the highest possible speeds while maintaining precise shaft positioning. |
7013 FE/HCP4AQBCA Bearing Structural Features & Performance Benefits
Quadruplex Back-to-Back (QBC) Design: The arrangement of four bearings provides an extremely high rigidity support system, effectively resisting moment loads and maintaining shaft alignment under severe operating conditions.
Superior Load Capacity: The angular contact design with an 18° contact angle is engineered to handle significant combined radial and axial loads in both directions, making it suitable for complex loading scenarios.
Enhanced High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic resin cage significantly lowers rotating mass and friction. This allows the bearing to achieve a high limiting speed of 32,500 rpm with stable operation.
Precision & Reliability: Manufactured to P4A super-precision standards with an open seal design, this bearing ensures minimal runout and vibration, which is critical for achieving superior surface finishes and positioning accuracy in precision machinery.
7013 FE/HCP4AQBCA Bearing Typical Application Areas
The 7013 FE/HCP4AQBCA is engineered for high-performance applications where precision, speed, and rigidity are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles: For CNC milling, grinding, and turning centers requiring exceptional accuracy and surface finish.
- Precision Grinding Spindles: Where minimal vibration and thermal stability are critical.
- High-Frequency Machining Centers: Utilizing the bearing's ability to operate at very high rotational speeds.
- Advanced Robotics and Automation: For high-accuracy rotary joints and arm actuators.
- Aerospace Test Rigs and Instrumentation: Applications demanding the highest levels of precision and reliability.
