71922 ACB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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Product Overview and Core Advantages
The 71922 ACB/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. As a single-row bearing with a 25° contact angle, it is optimized to handle combined loads, carrying significant radial loads and axial loads in one direction simultaneously. Its key advantages stem from its P4 (ABEC-7) tolerance class for superior running accuracy, the use of ceramic balls for reduced friction and higher speed capability, and a phenolic cage for quiet operation and excellent high-speed performance. This combination makes it an ideal solution for high-rigidity, high-speed spindles and precision machinery.
71922 ACB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD). |
| ACB | Angular Contact Bearing with a 25° contact angle and specific internal design. |
| HCP4A | Indicates a P4 (ABEC-7) tolerance class and the availability of a preload for enhanced rigidity. |
Structural Features and Performance Benefits
- High Rigidity and Precision: The P4 tolerance class ensures minimal runout and vibration, providing the stability required for ultra-precise applications. The availability of preload further increases system stiffness.
- Superior High-Speed Performance: The combination of ceramic balls, which are lighter and generate less centrifugal force, and the lightweight phenolic cage allows for a high limiting speed of 19,000 rpm.
- Excellent Load Capacity: The 25° contact angle is optimized to handle substantial combined radial and axial loads (Dynamic: 5558 lbf, Static: 5738 lbf).
- Optimized for Performance: The open seal type minimizes friction for maximum speed, while the bearing comes pre-lubricated for immediate operation within a wide temperature range of -30° to 110°C.
71922 ACB/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: Applications in PCB drilling and semiconductor manufacturing equipment.
- High-Frequency Motors: Where low friction and high rotational accuracy are critical.
- Advanced Robotics: Joints and actuators requiring high rigidity and responsiveness.
