71826 CD/HCP4
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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71826 CD/HCP4 Bearing Product Overview & Core Advantages
The 71826 CD/HCP4 is a single-row angular contact ball bearing engineered for applications demanding high precision and superior performance. Its primary advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial loads and axial loads in one direction. Manufactured to a P4 (ABEC-7) tolerance class, it ensures exceptional running accuracy. The combination of a ceramic ball material and a phenolic cage contributes to its high-speed capability, low friction, and extended service life, making it an ideal choice for high-reliability, precision machinery.
71826 CD/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 71826 | The basic bearing designation, indicating the specific size series and bore diameter of 130 mm. |
| CD | Signifies a high-contact-angle design (15° in this case), optimized for carrying higher axial loads. |
| HC | Indicates the use of hybrid ceramic balls (silicon nitride), which reduce weight, friction, and heat generation, enabling higher limiting speeds. |
| P4 | Denotes the precision tolerance class (equivalent to ABEC-7), ensuring ultra-precise dimensions and run-out for applications requiring minimal vibration and high positional accuracy. |
71826 CD/HCP4 Bearing Structural Features & Performance Benefits
- High-Speed Performance: The phenolic resin cage is lightweight and possesses excellent slip characteristics, while the ceramic balls have lower centrifugal force. This combination is crucial for achieving the high limiting speed of 13,000 rpm.
- High Rigidity and Load Capacity: The optimized 15° contact angle and robust internal geometry provide high rigidity, effectively supporting combined radial and axial loads.
- Precision Engineering: Manufactured to P4 tolerance with tight dimensional control on the bore, outside diameter, and width, this bearing guarantees smooth, quiet operation and high rotational accuracy.
- Preload Availability: The bearing is supplied with a preload, which increases system stiffness, reduces noise and vibration, and improves shaft positioning accuracy.
71826 CD/HCP4 Bearing Typical Application Areas
The 71826 CD/HCP4 is ideally suited for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Robotics: In robotic arm joints and spindle drives requiring high accuracy and responsiveness.
- Aerospace & Defense Systems: In gyroscopes, navigation systems, and auxiliary power units.
- High-Frequency Motors and Spindles: Used in PCB drilling spindles and dental handpieces.
