7020 CE/HCP4ATBTA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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7020 CE/HCP4ATBTA Bearing Product Overview & Core Advantages
The 7020 CE/HCP4ATBTA is a precision angular contact ball bearing configured in a Triplex Back-to-Back (TBT) matched set. Engineered for the most demanding applications, this bearing set delivers exceptional high rigidity and stability. Its P4A super-precision tolerance and ceramic ball construction enable superior running accuracy and are optimized for high-speed operation. This configuration is specifically designed to handle complex combined loads, including significant radial and axial loads, making it an ideal choice for high-performance spindles and other precision machinery requiring the utmost in accuracy and reliability.
7020 CE/HCP4ATBTA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance |
|---|---|---|
| 7020 | Standard bore (100 mm) & outside diameter (150 mm) | Defines the core bearing dimensions. |
| CE | Contact Angle (15°) & Internal Design | Optimized for high-speed and axial load capacity. |
| HC | Hybrid Ceramic (Silicon Nitride Balls) | Reduces friction, increases speed capability, and provides electrical insulation. |
| P4A | Tolerance Class (Super Precision) | Guarantees extremely tight dimensional and running accuracy for superior performance. |
| TBT | Triplex Back-to-Back (3 Bearings) | Provides maximum rigidity and moment load capacity. |
| A | Preload: Extra Light (Class A) | Ideal for very high speeds where minimal friction and heat generation are critical. |
7020 CE/HCP4ATBTA Bearing Structural Features & Performance Benefits
Unmatched Rigidity and Load Capacity: The Triplex Back-to-Back (TBT) arrangement of three bearings creates an exceptionally stiff bearing system. This configuration is highly effective at resisting complex combined loads and moment loads, ensuring minimal deflection under operation for ultimate machining precision.
Superior High-Speed Performance: The combination of a lightweight phenolic cage, hybrid ceramic balls, and an extra light preload (Class A) significantly reduces centrifugal forces and friction. This synergy allows the bearing to achieve its high limiting speed of 20,000 rpm with minimal heat generation.
Precision and Longevity: Manufactured to P4A super-precision standards, this bearing guarantees exceptional running accuracy. The open seal design is complemented by factory lubrication, ensuring optimal performance from the outset within its specified temperature range.
7020 CE/HCP4ATBTA Bearing Typical Application Areas
This high-performance bearing set is specifically designed for advanced machinery where precision, speed, and rigidity are non-negotiable. Key application areas include:
- High-Frequency CNC Machining Spindles
- Precision Grinding Spindles
- High-Speed Routing and Milling Heads
- Advanced Aerospace Test Equipment
- High-Performance Dental and Medical Spindles
