71922 ACE/HCP4ALDT
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71922 ACE/HCP4ALDT Bearing Product Overview & Core Advantages
The 71922 ACE/HCP4ALDT is a super-precision angular contact ball bearing engineered for the most demanding high-performance applications. This duplex tandem (DT) matched set is designed to handle primarily axial loads in one direction with exceptional rigidity and accuracy. Its defining features include a P4A tolerance class for ultra-precision, a 25° contact angle optimized for high axial load capacity, and ceramic balls that significantly enhance high-speed performance and service life. This bearing is the ideal solution for spindles requiring maximum stiffness, high rotational accuracy, and superior speed capabilities.
71922 ACE/HCP4ALDT Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning | Performance Implication |
|---|---|---|
| 71922 | Basic bearing series and size designation (110mm bore, 150mm OD, 40mm width) | Defines the core bearing dimensions and internal geometry. |
| ACE | 25° contact angle, high-precision design | Optimized for high axial load capacity and high-speed operation. |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Enables higher limiting speeds, reduced heat generation, and longer service life. |
| P4A | Ultra-precision tolerance class | Guarantees extremely tight running accuracy for superior machine performance. |
| DT | Duplex Tandem arrangement (2 bearings) | Configured to share axial loads, maximizing axial rigidity and load capacity in one direction. |
71922 ACE/HCP4ALDT Bearing Structural Features & Performance Benefits
Super-Precision & High Rigidity: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for applications requiring high rotational accuracy. The duplex tandem arrangement provides exceptional axial rigidity, making the assembly highly resistant to deflection under heavy loads.
High-Speed & High-Temperature Capability: The hybrid ceramic design with silicon nitride balls reduces centrifugal forces, lowers operating temperature, and allows for a limiting speed of 10,000 rpm. The phenolic resin cage is lightweight and robust, contributing to smooth high-speed operation. The design is suitable for a temperature range of -30°C to 110°C.
Enhanced Load Capacity: With a 25° contact angle and a dynamic load rating of 14,040 lbf, this bearing is engineered to sustain high axial loads. The tandem configuration effectively doubles the axial load-carrying capacity compared to a single bearing.
71922 ACE/HCP4ALDT Bearing Typical Application Areas
The 71922 ACE/HCP4ALDT is specifically designed for high-end machinery where precision, speed, and reliability are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing machines.
- High-Frequency Motors: Spindles for electric motors operating at very high RPM.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instruments.
