7020 ACD/HCP4ALDGA
Hybrid Ceramic Super Precision Bearings
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7020 ACD/HCP4ALDGA Bearing Product Overview & Core Advantages
The 7020 ACD/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This universal matchable (SU) bearing features a 25° contact angle and extra light preload (Class A), making it ideal for applications requiring minimal friction and high rotational accuracy. Its ceramic ball construction and P4A tolerance class ensure superior performance in high-speed and precision positioning systems.
7020 ACD/HCP4ALDGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACD | Angular Contact Design with 25° contact angle |
| HC | Hybrid Ceramic balls for enhanced performance |
| P4A | High precision tolerance class (superior to ABEC 7) |
| SU | Universal Matchable - can be arranged in any combination |
7020 ACD/HCP4ALDGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls (Si3N4) provides superior performance characteristics including reduced friction, higher speed capability, and extended service life in demanding conditions.
Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls (bore and OD tolerance: -0.004mm to 0), ensuring exceptional running accuracy and consistent performance in precision applications.
High-Speed Capability: The phenolic cage and ceramic balls enable a limiting speed of 15,000 rpm, while the optimized design minimizes heat generation and maintains stability at high rotational speeds.
Universal Matching Design: As a Universal Matchable (SU) bearing, multiple units can be arranged in various configurations (back-to-back, face-to-face, or tandem) to accommodate different load requirements and stiffness needs.
7020 ACD/HCP4ALDGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision machining centers and grinding spindles
- High-Speed Motors: Industrial spindle motors and high-frequency applications
- Precision Instrumentation: Measuring equipment and optical positioning systems
- Aerospace Components: Gyroscopes and navigation system components
- Medical Equipment: Dental handpieces and surgical tool rotors
- Semiconductor Manufacturing: Wafer handling robots and precision positioning stages
