71922 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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71922 CD/HCP4A Bearing Product Overview & Core Advantages
The 71922 CD/HCP4A is a single-row angular contact ball bearing engineered for applications demanding high precision and exceptional speed capabilities. Its defining features include a 15° contact angle for optimal handling of combined radial and axial loads, a P4 (ABEC-7) tolerance class for superior running accuracy, and a phenolic resin cage that enables its high limiting speed. This bearing is preloaded and comes pre-lubricated, making it ready for immediate installation in high-performance systems.
71922 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | The basic bearing designation, indicating a high-precision, light series angular contact bearing with a 110mm bore. |
| C | Designates a 15° contact angle, optimized for high-speed operation. |
| D | Indicates the bearing is supplied with a preload for enhanced rigidity and rotational accuracy. |
| HC | Signifies the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4 | Specifies the P4 (ABEC-7) tolerance class, denoting ultra-precision manufacturing standards. |
| A | Denotes that the bearing's internal geometry is optimized for a specific, high-stiffness mounting arrangement. |
71922 CD/HCP4A Bearing Structural Features & Performance Benefits
The performance of the 71922 CD/HCP4A is a direct result of its advanced construction:
- Hybrid Ceramic Design: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces friction, heat generation, and wear. This extends bearing life and allows for higher operating speeds compared to all-steel equivalents.
- Phenolic Resin Cage: The lightweight and robust phenolic cage offers excellent dimensional stability and low friction at high speeds, contributing directly to the bearing's impressive 16,000 rpm limiting speed.
- Optimized Contact Angle: The 15° contact angle provides an ideal balance, enabling the bearing to efficiently support significant axial loads in one direction while also handling radial loads.
- Precision & Rigidity: Manufactured to P4 tolerance and supplied with a preload, this bearing ensures minimal runout, high system stiffness, and precise rotational accuracy, which is critical for applications like machine tool spindles.
71922 CD/HCP4A Bearing Typical Application Areas
The 71922 CD/HCP4A is ideally suited for high-demand, precision-driven applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: High-accuracy robotic arms and joints.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and auxiliary power units.
- High-Speed Motors and Drives: Electric motors and frequency-controlled drives requiring minimal vibration.
