7022 ACEGA/HCP4AL1
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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7022 ACEGA/HCP4AL1 Bearing Product Overview & Core Advantages
The 7022 ACEGA/HCP4AL1 is a single row angular contact ball bearing designed for ultra-high precision and performance in demanding applications. Engineered to a P4A super precision tolerance class, it delivers exceptional running accuracy and rotational stability. A key advantage is its universal matchable (SU) design, allowing bearings to be supplied in pre-matched sets of three for simplified installation and optimal preload control. The combination of a ceramic ball material and phenolic resin cage enables superior high-speed performance and reduced rotational mass. This bearing is pre-lubricated and capable of handling significant combined radial and axial loads simultaneously, making it an ideal choice for high-rigidity, high-reliability spindle systems.
7022 ACEGA/HCP4AL1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7022 | Basic bearing series and size code | Defines the core dimensions: 110mm bore, 170mm OD, 28mm width. |
| A | Contact angle of 25° | Optimized for carrying substantial axial loads in one direction. |
| CEGA | Internal design and cage specification | Indicates enhanced internal geometry and a phenolic resin cage for high-speed operation. |
| HC | Hybrid Ceramic | Signifies the use of ceramic (silicon nitride) balls, offering lower density, higher stiffness, and reduced heat generation. |
| P4A | Tolerance Class | Denotes a super precision grade with extremely tight dimensional and running accuracy tolerances. |
| L1 | Light Preload | Specifies the internal radial preload level for enhanced rigidity in the mounted set. |
7022 ACEGA/HCP4AL1 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls with steel rings results in lower centrifugal forces, reduced friction, and superior performance at high speeds (up to 16,250 rpm). This combination also increases bearing service life and allows for operation with less lubrication.
- Phenolic Resin Cage: This lightweight and robust cage material is ideal for high-speed applications, offering excellent strength-to-weight ratio and smooth operation under high acceleration.
- High Rigidity & Load Capacity: The 25° contact angle and precision-ground raceways are engineered to handle significant combined (radial and axial) loads, providing the necessary stiffness for precision machinery.
- Super Precision P4A Tolerances: Manufactured to the strictest tolerance class, this bearing ensures minimal runout and vibration, which is critical for achieving the highest levels of machining accuracy and surface finish.
- Universal Matchable (SU): Supplied in sets of three bearings that are universally matchable, simplifying the assembly of preloaded bearing arrangements and ensuring consistent, predictable performance.
7022 ACEGA/HCP4AL1 Bearing Typical Application Areas
The 7022 ACEGA/HCP4AL1 is specifically engineered for high-performance applications where speed, precision, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling spindles.
- Precision Robotics: High-accuracy robotic arms and joints requiring minimal backlash and high stiffness.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other critical navigation and control equipment.
- High-Frequency Motors & Spindles: Motors for PCB drilling and other applications demanding extreme rotational accuracy.
