71816 CD/HCP4
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71816 CD/HCP4 Bearing Product Overview & Core Advantages
The 71816 CD/HCP4 is a single, angular contact ball bearing engineered for applications demanding the highest levels of precision and performance. Its primary advantage lies in its ability to accommodate high-speed operation while supporting significant combined loads (radial and axial). Manufactured to the exacting P4 (ABEC-7) tolerance class, this bearing is characterized by its exceptional running accuracy, high rigidity, and optimized internal geometry. The use of a phenolic cage and ceramic balls contributes to lower friction, reduced weight, and superior high-speed capabilities, making it an ideal choice for high-reliability spindles and precision machinery.
Model Code Breakdown
| 71816 | Basic designation indicating a metric series bearing with an 80 mm bore, 100 mm outside diameter, and 10 mm width. |
| CD | Signifies a specific internal design with a 15° contact angle and optimized internal geometry for high stiffness and precise operation. |
| HC | Indicates the use of Hybrid Ceramic components, specifically ceramic balls, which offer advantages in high-speed performance, reduced weight, and extended service life. |
| P4 | Denotes the tolerance class, equivalent to ABEC-7. This guarantees extremely tight dimensional and running accuracy for superior performance in precision applications. |
71816 CD/HCP4 Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The optimized angular contact design with a 15° contact angle provides high rigidity, enabling the bearing to effectively support combined radial and axial loads.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage and low-density, hard ceramic balls minimizes centrifugal forces and friction, allowing for a high limiting speed of 22,000 rpm.
- Precision Engineering: Manufactured to P4 tolerance class, this bearing ensures minimal runout and vibration, which is critical for the accuracy of machine tool spindles and other precision equipment.
- Extended Service Life: Ceramic balls are harder and more wear-resistant than steel, and they are electrically insulating, reducing the risk of electrical erosion. This hybrid construction significantly enhances durability and reliability.
- Preload Availability: The bearing is supplied with a preload, which eliminates internal clearance and increases system stiffness for improved positional accuracy and dynamic response.
71816 CD/HCP4 Bearing Typical Application Areas
This high-precision angular contact ball bearing is ideally suited for demanding applications where speed, accuracy, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling spindles.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense: Gyroscopes, radar systems, and other critical navigation and control systems.
- High-Frequency Motors and Spindles: Motors for PCB drilling and other high-RPM applications.
