71816 CD/P4QGB
71800 Series Super Precision Angular Contact Ball Bearings
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71816 CD/P4QGB Bearing Product Overview & Core Advantages
The 71816 CD/P4QGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. Engineered to a P4 tolerance class, it excels in high-speed scenarios while simultaneously handling combined radial and axial loads. Its universal matchable (SU) design allows for flexible mounting in various preload configurations, making it a versatile and highly reliable solution for critical machinery. The phenolic cage and optimized internal geometry contribute to its superior performance in demanding operational environments.
71816 CD/P4QGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71816 | Basic bearing designation, indicating a metric series angular contact ball bearing with an 80 mm bore, 100 mm OD, and 40 mm width. |
| CD | Contact angle designation (15°). This specific angle optimizes the bearing for handling combined loads. |
| P4 | Indicates a high-precision tolerance class, signifying extremely tight dimensional and running accuracy for superior performance. |
| QGB | Specifies the cage material and internal design. In this case, a phenolic (resin) cage is used, which is ideal for high-speed operation due to its low weight and excellent sliding properties. |
71816 CD/P4QGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The angular contact design and robust construction enable the bearing to support significant combined radial and axial loads. The specific 15° contact angle provides an optimal balance between axial and radial load capacity.
- Superior High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces and ensures stable operation at the high limiting speed of 28,000 rpm. This makes it an excellent high-speed bearing choice.
- Precision Engineering: Manufactured to P4 tolerance class standards, this bearing guarantees minimal runout and vibration, which is critical for applications requiring high rotational accuracy.
- Universal Matching Capability (SU): This feature allows bearings to be mounted in pairs or sets (as indicated by the 4-bearing matched set) in a universal arrangement, simplifying installation and enabling precise preload control for enhanced system stiffness.
71816 CD/P4QGB Bearing Typical Application Areas
The 71816 CD/P4QGB is ideally suited for high-performance machinery where precision and speed are paramount. Key application areas include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in high-RPM industrial drives.
- High-Frequency Motors and Spindles: Where low vibration and high accuracy are required.
- Aerospace and Defense Systems: Including gyroscopes and other precision instrumentation.
- Medical Equipment: Such as high-speed dental handpieces and laboratory centrifuges.
