71813 ACDGA/HCP4
Hybrid Ceramic Super Precision Bearings
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71813 ACDGA/HCP4 Bearing Product Overview & Core Advantages
The 71813 ACDGA/HCP4 is a single-row angular contact ball bearing engineered for applications demanding high precision and exceptional performance under combined loads. Positioned in the P4 tolerance class, it delivers superior running accuracy and dimensional stability. Its core advantages include the ability to accommodate significant radial loads and one-direction axial loads simultaneously, thanks to its 25° contact angle. The use of a phenolic cage and ceramic balls enables very high-speed operation up to 36,000 rpm, while its universal matching (SU) designation allows for flexible, pre-loaded bearing arrangements to achieve maximum system rigidity.
71813 ACDGA/HCP4 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71813 | Basic bearing series and size designation. |
| AC | Angular Contact design. |
| D | Enhanced internal design for higher load capacity. |
| GA | Indicates a specific preload group: Extra light (Class A). |
| HC | Refers to the Hybrid Ceramic construction (Ceramic balls with steel rings). |
| P4 | Denotes the tolerance class, signifying very high precision. |
71813 ACDGA/HCP4 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and extends service life, especially in high-speed applications.
High-Speed Phenolic Cage: The lightweight and robust phenolic resin cage ensures exceptional dimensional stability and low friction at high rotational speeds, contributing directly to the bearing's limiting speed of 36,000 rpm.
Precision & Rigidity: Manufactured to P4 tolerance standards with an extra light preload (Class A), this bearing provides high running accuracy and system stiffness, minimizing deflection under load.
Universal Matching (SU): As a universally matchable bearing, it can be paired with another identical bearing in various arrangements (back-to-back, face-to-face, or tandem) to handle combined loads and moments, offering design flexibility for complex applications.
71813 ACDGA/HCP4 Bearing Typical Application Areas
This high-precision, high-speed angular contact ball bearing is ideally suited for demanding applications across several industries:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Robotics: In robot arm joints and gears where high speed and positional accuracy are critical.
- High-Frequency Motors and Spindles: Used in motors for CNC machinery and PCB drilling spindles.
- Aerospace & Defense Systems: In gyroscopes, navigation systems, and other critical rotating assemblies.
- Medical Equipment: For dental handpieces and high-speed surgical tools.
