71922 CB/HCP4A
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
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
71922 CB/HCP4A Bearing Product Overview & Core Advantages
The 71922 CB/HCP4A is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and performance. Engineered to a P4 (ABEC-7) tolerance class, it is capable of accommodating combined loads, specifically high-precision radial loads and axial loads in one direction. A key feature is its preload availability, which eliminates internal clearance to ensure high system rigidity, precise rotational accuracy, and reduced noise and vibration. The use of a phenolic resin cage and ceramic balls contributes to its high-speed capability, low friction, and extended service life, making it an ideal choice for high-speed spindles and other precision machinery.
71922 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning | Advantage |
|---|---|---|
| CB | Specific internal design and contact angle (15°) | Optimized for specific load conditions and preload. |
| HC | Hybrid Ceramic (Ceramic balls with steel rings) | Higher speed, reduced friction, longer life, and electrical insulation. |
| P4 | Tolerance class equivalent to ABEC-7 | Ultra-high precision for applications requiring minimal runout and vibration. |
| A | 30° contact angle (standard for this series) | Provides a high thrust capacity. |
71922 CB/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design, combined with the availability of preload, ensures high system stiffness and precise shaft positioning, which is critical for machining accuracy.
- Superior High-Speed Performance: The lightweight phenolic resin cage and low-density ceramic (Si3N4) balls significantly reduce centrifugal forces, enabling a high limiting speed of 22,000 rpm. This hybrid construction also reduces operating temperature.
- Extended Service Life: Ceramic balls are harder and smoother than steel, leading to greatly reduced wear. They are also non-corrosive, enhancing reliability in challenging environments.
- Optimized Load Capacity: With a 15° contact angle and robust construction, this bearing effectively handles combined radial and axial loads, as reflected in its dynamic (5850 lbf) and static (6075 lbf) load ratings.
71922 CB/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Where low vibration and high rotational accuracy are paramount.
- Aerospace and Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
- Medical Equipment: High-speed dental handpieces and imaging device rotors.
