71911 FE/HCP4ALDT
Hybrid Ceramic Super Precision Bearings
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71911 FE/HCP4ALDT Bearing Product Overview & Core Advantages
The 71911 FE/HCP4ALDT is a precision angular contact ball bearing designed for demanding applications requiring high speed and rigidity. This duplex tandem (DT) matched set delivers exceptional performance by combining two bearings to handle significant axial loads in one direction. Its construction with a ceramic ball and phenolic cage enables superior high-speed operation and reduced rotational mass. Preloaded and manufactured to a P4A tolerance class, this bearing offers outstanding running accuracy and dimensional stability for high-reliability systems.
71911 FE/HCP4ALDT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71911 | Basic bearing series and size designation (55mm bore, 80mm OD). |
| FE | Designates a specific internal design and contact angle (18°). |
| HC | Indicates the use of Hybrid Ceramic balls (steel rings, ceramic balls). |
| P4A | Specifies the high-precision tolerance class, exceeding ABEC 7/ISO P4 standards. |
| DT | Identifies the bearing as a preloaded Duplex Tandem matched set. |
71911 FE/HCP4ALDT Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces centrifugal forces, minimizes friction, and allows for higher limiting speeds. This also provides inherent electrical insulation and superior performance in high-temperature or marginally lubricated environments.
Phenolic Resin Cage: The lightweight phenolic cage offers excellent dimensional stability and strength at high rotational speeds, contributing to smooth operation and reduced vibration.
Duplex Tandem (DT) Arrangement: This configuration pairs two bearings to maximize axial load capacity in a single direction, making it ideal for applications with heavy thrust loads. The set is supplied preloaded, ensuring immediate rigidity, precise shaft positioning, and eliminating internal clearance.
High-Precision P4A Tolerance: Manufactured to ultra-precise P4A tolerance class, this bearing guarantees minimal runout and exceptional rotational accuracy, which is critical for high-speed spindles and precision machinery.
71911 FE/HCP4ALDT Bearing Typical Application Areas
The 71911 FE/HCP4ALDT is engineered for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
- High-Frequency Motors and Spindles: Electric vehicle motors, CNC router spindles.
