7020 ACEGA/HCP4AH1
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7020 ACEGA/HCP4AH1 Bearing Product Overview & Core Advantages
The 7020 ACEGA/HCP4AH1 is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. As a single bearing with Universal Matchable (SU) designation, it is designed to be paired with other bearings from a pre-selected set to form a perfectly matched arrangement, delivering superior system rigidity and rotational accuracy. Its core advantages stem from the combination of a P4A tolerance class, a 25° contact angle, and a phenolic resin cage, making it an ideal solution for high-speed spindles and other precision machinery where high rigidity and minimal rotational error are critical.
7020 ACEGA/HCP4AH1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7020 | Standard bore diameter (100 mm) and series. | Defines the core bearing dimensions. |
| AC | Angular Contact design. | Optimized for combined radial and axial loads. |
| EGA | Extra Light Preload / Class A. | Provides minimal starting torque and reduced heat generation, ideal for high-speed applications. |
| HC | Hybrid Ceramic (Ceramic balls with steel rings). | Enhances high-speed capability, reduces weight, and increases stiffness. |
| P4A | High-Precision Tolerance Class. | Guarantees extremely tight dimensional and running accuracy for superior performance in precision machinery. |
7020 ACEGA/HCP4AH1 Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The use of ceramic balls with chrome steel rings significantly reduces centrifugal forces, lowers operating temperature, and extends bearing life, especially under high-speed conditions.
Phenolic Resin Cage: This lightweight and robust cage material offers excellent dimensional stability and guidance, contributing to smooth operation and a high limiting speed of 20,000 rpm.
25° Contact Angle & Universal Matching: The specific contact angle is optimized to handle significant combined loads. The Universal Matchable (SU) feature ensures that when used in sets, the bearings work in perfect harmony to maximize system rigidity and minimize runout.
Superior Load Capacity: With a dynamic load rating of 9518 lbf and a static load rating of 8550 lbf, this precision bearing is built to withstand demanding operational stresses.
7020 ACEGA/HCP4AH1 Bearing Typical Application Areas
The 7020 ACEGA/HCP4AH1 is specifically designed for high-performance applications, including:
- Machine Tool Spindles: CNC machining centers, grinding spindles.
- High-Speed Motors: Electric spindles, high-frequency motors.
- Precision Instrumentation: Measuring devices, rotary encoders.
- Aerospace & Defense Systems: Gyroscopes, radar systems.
