7202 ACD/HCP4ADGC
Hybrid Ceramic Super Precision Bearings
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7202 ACD/HCP4ADGC Bearing Product Overview & Core Advantages
The 7202 ACD/HCP4ADGC is a precision angular contact ball bearing designed for applications demanding high speed, rigidity, and accuracy. As a universally matchable (SU) bearing supplied in a pre-set pair, it is engineered to accommodate combined loads—significant radial and axial loads in one direction. Its key advantages include a moderate preload (Class C) for enhanced system rigidity, a phenolic cage for high-speed operation, and ceramic balls that reduce centrifugal forces and enable superior performance. This bearing is pre-lubricated and operates within a wide temperature range, making it a reliable, high-performance solution for demanding machinery.
7202 ACD/HCP4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7202 | Basic bearing series and size designation (15mm bore, 35mm OD). |
| AC | Angular Contact design with a 25° contact angle. |
| D | Moderate preload (Class C). |
| HC | Hybrid Ceramic construction (steel rings with ceramic balls). |
| P4A | High precision tolerance class for superior running accuracy. |
| DGC | Universal Matchable (SU) bearing pair, ready for back-to-back (DB) or face-to-face (DF) mounting. |
7202 ACD/HCP4ADGC Bearing Structural Features & Performance Benefits
High Rigidity and Preload: The bearing is supplied with a moderate preload (Class C), which eliminates internal clearance. This significantly increases system rigidity, reduces vibration, and improves positional accuracy under load.
Superior High-Speed Capability: The combination of a lightweight phenolic cage and low-density ceramic balls minimizes centrifugal forces and friction, allowing for a very high limiting speed of 95,000 rpm. This makes it an ideal high-speed bearing.
Enhanced Load Capacity: The 25° contact angle is optimized to handle substantial combined radial and axial loads. When mounted as a universal pair (SU), the arrangement can accommodate axial loads in both directions.
Precision and Longevity: Manufactured to P4A tolerance class, this bearing ensures exceptional running accuracy and low noise. The hybrid ceramic construction also offers improved resistance to wear and a longer service life compared to all-steel counterparts.
7202 ACD/HCP4ADGC Bearing Typical Application Areas
The 7202 ACD/HCP4ADGC is suited for high-performance applications where speed, precision, and rigidity are critical. Key industries and equipment include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Robotics: In robotic arm joints and high-accuracy actuators.
- High-Frequency Spindles: Used in PCB drilling and semiconductor manufacturing equipment.
- Turbochargers and Compressors: Where high rotational speeds and temperature stability are required.
- Advanced Medical Equipment: Such as dental handpieces and laboratory centrifuges.
