71826 CD/P4DGC
71800 Series Super Precision Angular Contact Ball Bearings
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71826 CD/P4DGC Bearing Product Overview & Core Advantages
The 71826 CD/P4DGC is a precision angular contact ball bearing designed for high-performance applications requiring exceptional rotational accuracy and rigidity. As part of a universally matchable (SU) pair, it is engineered to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. Its P4 tolerance class ensures ultra-precise dimensions and running accuracy, making it ideal for high-speed spindles and other demanding machinery. The combination of a phenolic cage and optimized internal geometry contributes to its high limiting speed and smooth operation under rigorous conditions.
71826 CD/P4DGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71826 | Basic bearing designation, indicating a metric angular contact ball bearing with a 130mm bore. |
| C | Designates a 15° contact angle, optimized for high-speed applications and moderate axial load capacity. |
| D | Indicates a moderate preload (Class C), which enhances system rigidity and reduces vibration. |
| P4 | Specifies the tolerance class, denoting very high precision in dimensions and running accuracy. |
| DGC | Universal Matchable (SU) designation. Two bearings with this suffix can be paired in a universal arrangement (face-to-face, back-to-back, or tandem) to handle complex load conditions. |
71826 CD/P4DGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design and moderate preload provide superior system stiffness, enabling the bearing to effectively support combined radial and axial loads. With a dynamic load rating of 14,332 lbf and a static load rating of 23,850 lbf, it offers reliable performance in demanding applications.
- High-Speed Performance: The lightweight phenolic cage minimizes centrifugal forces, while the 15° contact angle and precision manufacturing contribute to a high limiting speed of 11,000 rpm.
- Precision Engineering: Manufactured to P4 tolerance class with tight bore, outside diameter, and width tolerances, this bearing ensures minimal runout and exceptional rotational accuracy.
- Universal Matchability (SU): The DGC suffix allows for flexible mounting configurations. When used in a matched set of 2, it provides a pre-defined preload and optimized load distribution for complex applications.
71826 CD/P4DGC Bearing Typical Application Areas
The 71826 CD/P4DGC is ideally suited for high-precision, high-speed machinery where accuracy and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: For CNC machining centers, grinders, and lathes requiring high rotational accuracy and stiffness.
- Precision Instrumentation: Used in high-speed measuring devices and analytical equipment.
- High-Frequency Motors and Spindles: Applications demanding smooth operation at elevated speeds.
- Industrial Pumps and Compressors: Where reliable performance under combined loads is essential.
