7002 CE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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7002 CE/HCP4ADT Bearing Product Overview & Core Advantages
The 7002 CE/HCP4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional performance. This duplex tandem (DT) matched set features two bearings preloaded against each other, delivering superior axial rigidity and the ability to handle significant combined loads. Manufactured to an ultra-precise P4A tolerance class and utilizing ceramic balls and a phenolic cage, it is engineered for high-speed operation and long-term reliability in precision machinery.
7002 CE/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7002 | Basic bearing series and size designation (15mm bore, 32mm OD). |
| C | 15° contact angle, optimized for high axial load capacity. |
| E | Optimized internal design for enhanced performance and high-speed capability. |
| HC | Hybrid Ceramic: Signifies the use of ceramic balls for reduced friction, lower heat generation, and longer service life. |
| P4A | The tolerance class, indicating extremely high precision with tight dimensional and running accuracy tolerances. |
| ADT | Arrangement Duplex Tandem: Denotes a preloaded set of two bearings arranged to handle high unidirectional axial loads. |
7002 CE/HCP4ADT Bearing Structural Features & Performance Benefits
Duplex Tandem (DT) Arrangement: The two bearings are mounted in tandem, sharing the axial load. This configuration provides maximum axial rigidity and is essential for applications with heavy thrust loads in one direction.
Hybrid Ceramic Construction: The combination of steel rings and ceramic balls significantly reduces friction and operating temperature, enabling higher limiting speeds (140,000 rpm) and increased service life, especially in lubricant-starved conditions.
High-Precision & Preload: The P4A tolerance class ensures minimal runout and vibration. The factory-applied preload eliminates internal clearance, resulting in superior rotational accuracy and high rigidity for precise positioning.
Phenolic Cage: The lightweight and robust phenolic resin cage contributes to smooth operation at high speeds and offers good dimensional stability.
7002 CE/HCP4ADT Bearing Typical Application Areas
This high-performance bearing set is ideally suited for applications where extreme precision, speed, and rigidity are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Advanced Robotics and Automation Systems
- Aerospace Actuation and Control Systems
