S71922 CD/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S71922 CD/HCP4ADGA Bearing Product Overview & Core Advantages
The S71922 CD/HCP4ADGA is a precision double row angular contact ball bearing engineered for applications demanding exceptional accuracy and reliability. This sealed bearing is designed to accommodate combined loads, simultaneously handling significant radial loads and bidirectional axial thrust. Its extra light preload (Class A) and P4A super-precision tolerance ensure smooth, quiet operation with minimal runout, making it ideal for high-speed spindles and other high-rigidity systems. The combination of a phenolic cage and ceramic balls contributes to its superior high-speed performance and long service life.
S71922 CD/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| S7 | High-Grade Bearing Steel | Indicates the use of premium material for enhanced durability and performance. |
| 1922 | Size Designation | Specifies the bearing dimensions: 110mm bore, 150mm OD, 40mm width. |
| CD | 15° Contact Angle, Universal Match | Optimized for high-speed operation and can be universally matched in pairs. |
| HC | Hybrid Ceramic | Features ceramic balls for reduced friction, higher speed capability, and longer life. |
| P4A | Tolerance Class | Denotes super-precision running accuracy for demanding applications. |
| DGA | Sealed & Grease Lubricated | Indicates the bearing is sealed and pre-lubricated with grease, offering a maintenance-free solution. |
S71922 CD/HCP4ADGA Bearing Structural Features & Performance Benefits
High Rigidity & Load Capacity: The double row angular contact design provides a rigid support system, capable of handling high radial dynamic load ratings of 22,725 lbf and static load ratings of 32,175 lbf, as well as substantial bidirectional axial loads.
Superior High-Speed Performance: The lightweight phenolic cage and low-density ceramic balls significantly reduce centrifugal forces, enabling a high limiting speed of 10,000 rpm. The 15° contact angle is optimized for such high-speed applications.
Maintenance-Free Operation: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is designed for long-term, maintenance-free operation within a temperature range of -30°C to 110°C.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional tolerances on the bore, outside diameter, and width, ensuring predictable and accurate performance in the most demanding precision machinery.
S71922 CD/HCP4ADGA Bearing Typical Application Areas
The S71922 CD/HCP4ADGA is ideally suited for high-performance applications where precision, speed, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring and testing equipment.
- High-Frequency Motors and Spindles: PCB drilling spindles, dental handpieces.
- Robotics: High-accuracy robotic arm joints and actuators.
- Aerospace & Defense: Gyroscopes, radar systems, and other critical navigation components.
