7022 ACEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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Materials
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7022 ACEGA/HCP4A Bearing Product Overview & Core Advantages
The 7022 ACEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. Engineered with ceramic balls and manufactured to P4A tolerance class, this bearing delivers superior performance in high-speed and high-rigidity scenarios. Its 25° contact angle is optimized to handle significant combined loads—both radial and axial—simultaneously. As part of a universally matchable set, it enables precise preload control when mounted with other bearings, making it ideal for ultra-precision spindles and other critical machinery.
7022 ACEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7022 | Standard bore (110mm) & outside diameter (170mm) | Defines the fundamental bearing dimensions |
| AC | Angular Contact design | Optimized for combined radial and axial loads |
| EGA | Extra Light Preload / Class A | Minimizes deflection under light loads for high precision |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Enables higher speeds, reduced friction, and longer service life |
| P4A | Super Precision Tolerance Class | Guarantees extremely tight dimensional and running accuracy |
7022 ACEGA/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces centrifugal forces, allowing for a limiting speed of 16,250 rpm. This hybrid design also provides superior resistance to wear and thermal expansion.
Phenolic Resin Cage: The phenolic cage material offers excellent dimensional stability and low friction at high speeds, contributing to smooth operation and reduced vibration.
High Rigidity & Load Capacity: The angular contact design and robust construction provide high rigidity, supporting a dynamic load rating of 10,102 lbf and a static load rating of 9,562 lbf. This makes it capable of handling demanding combined loads.
Universal Matching (SU): This bearing is part of a universally matchable set of three. This allows for flexible mounting arrangements and simplified achievement of precise preload in complex bearing systems.
7022 ACEGA/HCP4A Bearing Typical Application Areas
The 7022 ACEGA/HCP4A is engineered for the most demanding high-precision and high-speed machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme accuracy and rigidity.
- Precision Robotics: Arm joints and rotary actuators where high moment load capacity and low friction are critical.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other instrumentation requiring reliable high-speed operation.
- High-Frequency Motors and Spindles: Applications where ceramic hybrid technology enables higher rotational velocities and reduced energy consumption.
