71816 CD/HCP4DBA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 71816 CD/HCP4DBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This matched pair arrangement in a Back-to-Back (DB) configuration provides superior stability and can accommodate combined loads (radial and axial loads simultaneously). Manufactured to P4 tolerance class, it features ceramic balls and a phenolic cage, making it an ideal solution for high-speed and high-precision machinery where minimal thermal expansion and high reliability are critical.
71816 CD/HCP4DBA Bearing Model Code Explained, Specifications & Naming Convention
- 71816: Basic bearing series and size designation (80mm bore, 100mm OD, 20mm width).
- CD: Indicates a duplex bearing with a Back-to-Back (DB) mounting arrangement. This configuration provides high moment rigidity.
- HC: Signifies the use of Hybrid Ceramic components, specifically ceramic balls.
- P4: Denotes a super precision tolerance class, ensuring extremely tight dimensional and running accuracy.
- DB: Confirms the Back-to-Back matched arrangement of the two bearings.
- A: Specifies an Extra Light preload for minimal friction and optimal high-speed performance.
Structural Features and Performance Benefits
High Rigidity and Stability: The duplex Back-to-Back (DB) structure significantly increases system rigidity, effectively resisting moment loads and ensuring precise shaft positioning.
Superior High-Speed Capability: The combination of a lightweight phenolic cage and low-density ceramic balls reduces centrifugal forces, allowing for a high limiting speed of 28,000 rpm. The hybrid design also minimizes heat generation.
Enhanced Load Capacity: The 15° contact angle is optimized to handle significant combined radial and axial loads. The dynamic and static load ratings ensure long service life under demanding conditions.
Precision Performance: Manufactured to P4 tolerance standards with tight dimensional tolerances on the bore, outside diameter, and width, this bearing guarantees exceptional running accuracy and low vibration.
71816 CD/HCP4DBA Bearing Typical Application Areas
This high-performance bearing is engineered for the most demanding applications, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring utmost precision and rigidity.
- High-Frequency Motors and Spindles: Where low friction, high speed, and thermal stability are paramount.
- Precision Robotics: In critical joints and actuators demanding high accuracy and responsiveness.
- Aerospace and Defense Systems: For gyroscopes, navigation systems, and other critical rotating assemblies.
