7022 CE/HCP4AQBCA
Hybrid Ceramic Super Precision Bearings
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7022 CE/HCP4AQBCA Bearing Product Overview & Core Advantages
The **7022 CE/HCP4AQBCA** is a **P4A super-precision angular contact ball bearing** configured in a **Quadruplex Back-to-Back (QBC) matched set**. Engineered for the most demanding applications, this bearing offers exceptional **rotational accuracy**, **high rigidity**, and superior **high-speed performance**. Its quadruplex back-to-back arrangement provides maximum **moment stiffness** and is optimized to handle **combined loads** (radial and axial) from both directions simultaneously. The use of **ceramic balls** and a **phenolic cage** significantly reduces centrifugal forces and friction, enabling higher limiting speeds and reduced operating temperatures.
7022 CE/HCP4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7022 | Standard bearing series designation, indicating bore diameter (110 mm) and cross-section. |
| CE | Indicates Ceramic (Si3N4) balls are used for enhanced speed capability and reduced weight. |
| HC | Refers to the Phenolic (Hybrid Composite) cage, ideal for high-speed operation. |
| P4A | Denotes a super-precision tolerance class with enhanced running accuracy and dimensional stability. |
| QBC | Specifies the bearing is supplied as a Quadruplex Back-to-Back matched set of four bearings. |
7022 CE/HCP4AQBCA Bearing Structural Features & Performance Benefits
- Extreme Rigidity and Moment Load Capacity: The Quadruplex Back-to-Back (QBC) arrangement creates a very wide effective spread, providing exceptional resistance to moment loads and tilting moments, which is critical for maintaining precision under heavy combined loads.
- Superior High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a significantly higher limiting speed compared to all-steel equivalents, with lower heat generation.
- High Precision and Accuracy: Manufactured to P4A tolerance class with an Extra light (A) preload, this bearing ensures minimal runout and superior rotational accuracy for applications requiring the highest level of precision.
- Optimized Load Distribution: The 15° contact angle provides an excellent balance between radial and axial load carrying capacity, making it suitable for complex load conditions.
7022 CE/HCP4AQBCA Bearing Typical Application Areas
This high-performance bearing set is designed for ultra-precise, high-speed machinery where maximum rigidity and accuracy are non-negotiable. Key applications include:
- High-Speed Machine Tool Spindles (e.g., milling, grinding, and jig boring)
- Precision Grinding Spindles
- High-frequency Main Spindles for CNC machining centers
- Aerospace components and test equipment
- Advanced Robotics and precision rotary tables
