71916 ACD/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
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71916 ACD/HCP4ADBA Bearing Product Overview & Core Advantages
The 71916 ACD/HCP4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched back-to-back (DB) arrangement is preloaded to Extra Light (Class A) specifications, ensuring minimal axial and radial play for superior system stability. Its construction with ceramic balls and a phenolic cage enables outstanding high-speed performance and the capability to handle combined loads (radial and axial) simultaneously. This bearing is a premier choice for high-precision, high-reliability machinery.
71916 ACD/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 71916 | Basic bearing series and size designation (80mm bore, 110mm OD). | Defines the core bearing dimensions. |
| AC | Angular Contact design with a 25° contact angle. | Optimized for handling combined loads. |
| D | Duplex (Two single bearings as a set). | Enables preloading for increased system rigidity. |
| HC | Hybrid Ceramic (Steel rings with ceramic balls). | Provides higher speed capability, reduced weight, and longer service life. |
| P4A | High precision tolerance class (equivalent to ABEC 7). | Guarantees extremely tight running accuracy for demanding applications. |
| DB | Back-to-Back mounting arrangement. | Provides high moment rigidity and can accommodate axial loads in both directions. |
| A | Extra Light Preload. | Minimizes friction and heat generation, ideal for very high speeds. |
71916 ACD/HCP4ADBA Bearing Structural Features & Performance Benefits
High Rigidity and Stability: The duplex back-to-back (DB) arrangement and Class A preload create an exceptionally stiff bearing system that resists deflection under load, making it ideal for applications where shaft positioning accuracy is critical.
Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage significantly lowers friction and allows for a high limiting speed of 28,000 rpm. The open seal design minimizes drag and heat buildup.
Enhanced Load Capacity: The 25° contact angle is optimized to handle significant combined loads. The dynamic and static load ratings ensure reliable performance under demanding operating conditions.
Precision Operation: Manufactured to a P4A tolerance class, this bearing guarantees minimal runout and vibration, which is essential for the smooth operation of precision machinery.
71916 ACD/HCP4ADBA Bearing Typical Application Areas
This high-performance duplex angular contact ball bearing is engineered for the most demanding sectors, including:
- High-Frequency Machine Tool Spindles: For milling, grinding, and drilling where precision and speed are paramount.
- Precision Robotics and Automation: In robot arm joints and high-accuracy positioning systems.
- Advanced Aerospace and Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring utmost reliability.
- High-Speed Motors and Turbomachinery: Pumps, compressors, and generators operating at extreme rotational speeds.
