71922 CDGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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71922 CDGA/HCP4A Bearing Product Overview & Core Advantages
The 71922 CDGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered with ceramic balls and manufactured to P4A super-precision tolerance class, this bearing delivers superior rotational accuracy, reduced friction, and extended service life. Its 15° contact angle and extra light preload (Class A) make it ideal for applications requiring high-speed operation and precise axial positioning. As part of a universally matchable (SU) set, it enables flexible mounting configurations to achieve optimal stiffness and minimal runout in complex spindle assemblies.
71922 CDGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD, 20mm width) |
| C | 15° contact angle for optimized combination load capacity |
| D | Phenolic resin cage for reduced weight and superior high-speed performance |
| G | Universal matchable bearing for flexible mounting arrangements |
| A | Extra light preload (Class A) for minimal friction and heat generation |
| HCP4A | Hybrid Ceramic P4A - Ceramic balls with P4A super-precision tolerances |
71922 CDGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) significantly reduces friction, heat generation, and wear. This hybrid design enables higher limiting speeds (16,250 rpm) and provides electrical insulation properties, making it suitable for applications where electrical arcing is a concern.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional control (bore/OD tolerance: -0.004mm to 0), this bearing ensures minimal vibration and exceptional running accuracy. The 28 ceramic balls with 12.7mm diameter are precisely arranged to optimize load distribution.
High-Speed Capability: The phenolic resin cage offers excellent strength-to-weight ratio and withstands high centrifugal forces, contributing to stable operation at extreme rotational speeds. The 15° contact angle provides optimal balance between radial and axial load capacity for high-speed applications.
Superior Load Capacity: With dynamic load rating of 14,040 lbf and static load rating of 16,200 lbf, this bearing handles significant combination loads while maintaining precision. The universal matching capability allows creation of preloaded sets for enhanced system stiffness.
71922 CDGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and precision milling applications
- Medical Equipment: Dental handpieces, surgical tools, and diagnostic imaging systems
- Aerospace Systems: Gyroscopes, navigation instruments, and auxiliary power units
- Semiconductor Manufacturing: Wafer handling robots, precision positioning stages, and inspection equipment
- High-Speed Motors: CNC spindle motors, turbochargers, and specialized industrial drives
