71913 FE/HCP4ALDT
Hybrid Ceramic Super Precision Bearings
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71913 FE/HCP4ALDT Bearing Product Overview & Core Advantages
The 71913 FE/HCP4ALDT is a precision angular contact ball bearing designed for demanding applications requiring exceptional performance. This duplex tandem (DT) arrangement bearing set offers superior high rigidity and is optimized for handling primarily axial loads in one direction. Manufactured to P4A tolerance class, it ensures exceptional running accuracy. The combination of a phenolic cage and ceramic balls enables outstanding high-speed performance, making it ideal for machine tool spindles and other precision machinery.
71913 FE/HCP4ALDT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71913 | Basic bearing designation, indicating the bearing size (65mm bore, 90mm OD). |
| FE | Indicates a hydrocarbon-resistant phenolic resin cage. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4A | Denotes the tolerance class, specifying very high precision for bore, outer diameter, and width. |
| DT | Specifies a Duplex Tandem preloaded arrangement, where two bearings are mounted to increase axial load capacity in one direction. |
71913 FE/HCP4ALDT Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The duplex tandem arrangement creates a highly rigid bearing system capable of supporting significant axial loads. The 18° contact angle is optimized for this type of loading.
Superior High-Speed Performance: The phenolic cage (FE) offers low weight and excellent sliding properties, while the ceramic balls (HC) reduce centrifugal forces and friction. This combination allows for a very high limiting speed of 36,000 rpm.
Precision & Accuracy: Manufactured to P4A tolerance class with tight dimensional tolerances, this bearing ensures minimal runout and vibration, which is critical for high-precision applications.
Preload & Temperature Stability: The bearings are supplied as a preloaded set, eliminating internal clearance for immediate precision operation. The phenolic cage and ceramic balls contribute to stable performance within the specified temperature range.
71913 FE/HCP4ALDT Bearing Typical Application Areas
This high-precision, high-speed bearing set is engineered for advanced machinery, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Spindles
- High-Frequency Machining Centers
- Advanced Robotics (High-precision rotary joints)
- Aerospace & Defense Systems (Gyroscopes, navigation systems)
