71913 FE/HCP4ADT
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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71913 FE/HCP4ADT Bearing Product Overview & Core Advantages
The 71913 FE/HCP4ADT is a super-precision angular contact ball bearing supplied as a matched duplex tandem (DT) set. Engineered for the most demanding applications, this bearing is characterized by its P4A tolerance class for exceptional running accuracy, a ceramic ball construction for superior high-speed performance, and a phenolic cage for reduced weight and friction. Its duplex tandem arrangement is specifically designed to handle high unidirectional axial loads with maximum rigidity, making it an ideal solution for high-precision, high-speed spindles.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 71913 | Bearing series and size designation (65mm bore, 90mm OD, 26mm width) |
| FE | Filled with a specific, high-performance lubricant |
| HC | Hybrid Ceramic (Silicon Nitride) balls |
| P4A | Super-precision tolerance class, tighter than ABEC 7/ISO P4 |
| DT | Duplex Tandem arrangement (two bearings mounted together to increase axial load capacity in one direction) |
71913 FE/HCP4ADT Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The duplex tandem arrangement creates a highly rigid bearing system capable of supporting very high unidirectional axial loads. The 18° contact angle is optimized for this load type.
Exceptional High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a very high limiting speed of 36,000 rpm. This hybrid bearing design also reduces operating temperature and extends service life.
Super-Precision Operation: Manufactured to P4A tolerance class with precise bore and outside diameter tolerances, this bearing ensures minimal runout and vibration for ultra-smooth rotation in precision machinery.
Pre-lubricated and Ready-to-Use: The bearing is pre-lubricated (FE code), simplifying installation and providing immediate protection within its specified temperature range of -30°C to 110°C.
71913 FE/HCP4ADT Bearing Typical Application Areas
The 71913 FE/HCP4ADT is designed for high-performance applications requiring extreme precision and speed, such as:
- High-Speed Machine Tool Spindles (CNC milling, grinding, and jig boring machines)
- Precision Grinding Spindles
- High-frequency machining centers
- Other precision rotary equipment where maximum axial rigidity and speed are critical.
