71920 ACD/HCP4AH1
Hybrid Ceramic Super Precision Bearings
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71920 ACD/HCP4AH1 Bearing Product Overview & Core Advantages
The 71920 ACD/HCP4AH1 is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. This single bearing features a 25° contact angle and is supplied with a preload, making it ideal for setups requiring high system rigidity and precise rotational accuracy. Its ceramic ball construction and P4A tolerance class contribute to superior high-speed capability and extended service life, especially in challenging operational environments. The bearing is pre-lubricated for immediate use, offering a reliable solution for combination loads where both radial and axial forces are present.
71920 ACD/HCP4AH1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71920 | Basic bearing designation, indicating the bearing size with a 100mm bore and 140mm outside diameter. |
| ACD | Angular Contact Design with a 25° contact angle and optimized internal geometry for high performance. |
| HC | Hybrid Ceramic, signifying the use of ceramic balls for reduced friction, higher speed potential, and non-conductive properties. |
| P4A | Tolerance class denoting very high precision levels for both bore and outside diameter tolerances. |
| H | Indicates the bearing is supplied with a preload for enhanced rigidity. |
71920 ACD/HCP4AH1 Bearing Structural Features & Performance Benefits
High Rigidity and Precision: The 25° contact angle and applied preload provide superior axial and radial stiffness, minimizing deflection under load for exceptional positional accuracy.
Enhanced Speed and Durability: The combination of ceramic balls and a lightweight phenolic cage reduces centrifugal forces and friction, enabling a high limiting speed of 15,000 rpm and excellent performance in high-speed applications.
Superior Load Capacity: Designed to handle significant combination loads, this bearing offers a high dynamic load rating of 12,870 lbf and a static load rating of 14,175 lbf, ensuring reliability in demanding conditions.
Optimized for Precision Applications: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter and outside diameter, this bearing guarantees consistent, high-precision performance.
71920 ACD/HCP4AH1 Bearing Typical Application Areas
The 71920 ACD/HCP4AH1 is ideally suited for high-performance machinery and systems, including:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers requiring utmost precision and rigidity.
- Precision Robotics: In robotic arms and joints where accuracy, speed, and minimal maintenance are critical.
- High-Speed Motors and Spindles: Applications demanding low friction, high rotational speeds, and long-term reliability.
- Aerospace and Defense Systems: In gyroscopes, navigation systems, and other instrumentation requiring high precision and stability.
