71911 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71911 CB/HCP4A Bearing Product Overview & Core Advantages
The 71911 CB/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered with a 15° contact angle and ceramic ball construction, it delivers superior performance in high-speed scenarios. Its key advantage lies in its ability to accommodate combined radial and axial loads simultaneously, making it an ideal solution for precision spindles and other high-performance machinery requiring minimal runout and maximum stability.
71911 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Implication |
|---|---|---|
| CB | Specific internal design and clearance | Optimized for specific preload and stiffness requirements. |
| HC | Hybrid Ceramic (Ceramic balls, steel rings) | Reduced weight, lower friction, and higher limiting speed. |
| P4 | Tolerance class (ABEC-7) | Guarantees ultra-high precision and minimal dimensional variation for critical applications. |
71911 CB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, enabling higher rotational speeds (up to 43,000 rpm) and providing non-conductive properties.
- Phenolic Resin Cage: The lightweight and robust phenolic cage ensures stable ball guidance and reduced friction, contributing to smooth operation at high velocities.
- Precision P4 (ABEC-7) Tolerance: Manufactured to the strictest dimensional and running accuracy standards, this bearing ensures minimal vibration and superior positioning accuracy in precision machinery.
- 15° Contact Angle & Preload: The defined contact angle and availability of preload allow the bearing to handle significant axial loads while providing high system rigidity and precise shaft positioning.
71911 CB/HCP4A Bearing Typical Application Areas
The 71911 CB/HCP4A is specifically engineered for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles
- Precision Grinding Machines
- Dental and Medical Handpieces
- High-Frequency Motors and Spindles
- Aerospace Instrumentation
- Semiconductor Manufacturing Equipment
