71916 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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71916 CB/HCP4A Bearing Product Overview & Core Advantages
The 71916 CB/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and superior rotational accuracy. Positioned in the P4 (ABEC-7) tolerance class, it is designed to handle combined loads, primarily thrust loads in one direction, while also supporting significant radial loads. Its key advantages include exceptional high-speed capability, enabled by a phenolic cage and ceramic balls, and the availability of preload for enhanced system rigidity and positional accuracy in demanding machinery.
71916 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71916 | Standard bearing series designation, indicating the bearing dimensions (80mm bore, 110mm OD, 16mm width). |
| C | Designates a 15° contact angle, optimized for high-speed applications. |
| B | Indicates a moderate preload is applied to the bearing. |
| HC | Signifies the use of Hybrid Ceramic components (Ceramic balls with steel rings). |
| P4 | Specifies the high precision tolerance class (equivalent to ABEC-7). |
| A | Denotes that the bearing has a 30° contact angle. (Note: This appears to be a discrepancy with the provided 15° specification. The model code suggests a design variant.) |
71916 CB/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (ceramic) balls significantly reduces friction, heat generation, and wear. This construction enables a limiting speed of 30,000 rpm, provides electrical insulation, and extends service life, especially in high-speed or marginally lubricated conditions.
Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction at high rotational speeds, contributing directly to the bearing's exceptional high-speed performance.
High Precision & Preload: Manufactured to P4 tolerance class, this bearing ensures minimal runout and vibration. The applied preload (B designation) increases system stiffness, improves rotational accuracy, and reduces noise and vibration under operational loads.
Load Capacity: With a 15° contact angle and a dynamic load rating of 3510 lbf, it is adept at handling combined loads where thrust loads are predominant.
71916 CB/HCP4A Bearing Typical Application Areas
This high-precision, high-speed angular contact bearing is ideally suited for advanced applications where rotational accuracy and speed are critical. Key industries and equipment include:
- Machine Tool Spindles: For high-speed milling, grinding, and drilling centers.
- Precision Robotics: In high-accuracy robotic arms and joints.
- Aerospace & Defense Systems: In gyroscopes, avionics, and other critical rotating mechanisms.
- High-Frequency Motors and Spindles: Used in PCB drilling spindles and dental handpieces.
- Turbochargers and High-Speed Compressors: Where extreme rotational speeds are encountered.
