71913 FE/HCPA9ADT
Hybrid Ceramic Super Precision Bearings
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71913 FE/HCPA9ADT Bearing Product Overview & Core Advantages
The 71913 FE/HCPA9ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional performance. This duplex tandem (DT) arrangement bearing set is preloaded and ready for installation, offering superior high rigidity and the ability to handle significant combined loads. Featuring a phenolic cage and ceramic balls, it is engineered for high-speed operation and extended service life in precision machinery.
71913 FE/HCPA9ADT Bearing Model Code Explained, Specifications & Naming Convention
| 71913 | Basic bearing series and size designation (65mm bore, 90mm OD, 26mm width). |
| FE | Indicates a hydrodynamic design, optimized for high-speed performance. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride), reducing weight and inertia for higher speeds. |
| PA9A | Denotes an ultra-high precision tolerance class (PA9A), ensuring minimal runout and vibration. |
| DT | Specifies a Duplex Tandem preloaded arrangement. Two bearings are mounted together to share axial loads in the same direction, increasing axial rigidity and load capacity. |
71913 FE/HCPA9ADT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex tandem arrangement and 18° contact angle are specifically configured to provide maximum resistance to axial deflection under heavy thrust loads, making these angular contact bearings ideal for applications demanding extreme positional accuracy.
Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density ceramic balls significantly reduces centrifugal forces, allowing for a high limiting speed of 36,000 rpm. This hybrid ceramic bearing design also minimizes heat generation at high rotational velocities.
Precision & Reliability: Manufactured to the stringent PA9A tolerance class, this bearing ensures smooth, quiet, and vibration-free operation, which is critical for the accuracy of high-end machinery. The open seal type allows for optimized lubrication management in controlled environments.
71913 FE/HCPA9ADT Bearing Typical Application Areas
This high-performance bearing is specifically suited for advanced applications where speed, precision, and rigidity are paramount. Typical uses include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and auxiliary power units.
- High-Frequency Motors & Spindles: PCB drilling spindles and dental handpieces.
