71916 CD/P4ADBC
71900 Series Super Precision Angular Contact Ball Bearings
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71916 CD/P4ADBC Bearing Product Overview & Core Advantages
The 71916 CD/P4ADBC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) arrangement provides superior stability and can accommodate combined loads (radial and axial loads simultaneously). With its P4A tolerance class and moderate preload, it delivers high running accuracy and is optimized for high-speed operation up to 28,000 rpm, making it ideal for high-performance machinery.
71916 CD/P4ADBC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71916 | Basic bearing designation (80mm bore, 110mm OD, 32mm width) |
| C | 15° contact angle |
| D | Duplex Back-to-Back (DB) arrangement |
| P4A | High precision tolerance class (exceeding ABEC 7) |
| DB | Duplex Back-to-Back mounting (confirmed from matched arrangement) |
| C | Moderate preload / Class C |
71916 CD/P4ADBC Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads and shaft deflection, ensuring precise shaft positioning.
- Superior Load Capacity: With a 15° contact angle and optimized internal geometry, this bearing efficiently handles combined radial and axial loads in both directions. The dynamic load rating of 13,320 lbf and static load rating of 17,550 lbf demonstrate its robust performance.
- High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, while the precision-ground chrome steel components and moderate preload contribute to stable operation at the limiting speed of 28,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional tolerances on bore, outside diameter, and width, this bearing ensures minimal runout and vibration for high-precision applications.
71916 CD/P4ADBC Bearing Typical Application Areas
The 71916 CD/P4ADBC is engineered for high-performance machinery where precision, speed, and rigidity are critical. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers
- Precision Gearboxes: Industrial robotics and automation systems
- High-Frequency Motors: Spindles for PCB drilling and semiconductor manufacturing
- Medical Equipment: Dental handpieces and laboratory centrifuges
- Aerospace Systems: Gyroscopes and navigation instruments
