S7202 ACD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7202 ACD/HCP4A Bearing Product Overview & Core Advantages
The S7202 ACD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional speed and rigidity. This sealed, preloaded single bearing is designed to accommodate combined loads, specifically high radial and one-directional axial loads. Its compact design, featuring a 15mm bore and 35mm outside diameter, makes it ideal for high-reliability, space-constrained assemblies. The combination of a ceramic ball material and P4 (ABEC-7) tolerance class ensures superior performance, low heat generation, and extended service life in high-speed environments.
S7202 ACD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7202 ACD | Denotes the bearing series and size (15x35x11mm) with a 25° contact angle and a specific internal design optimized for high-speed operation. |
| HC | Indicates the use of Hybrid Ceramic balls, which are lighter and harder than steel, reducing centrifugal forces and enabling higher limiting speeds. |
| P4A | Specifies the P4 (ABEC-7) tolerance class, guaranteeing extremely tight dimensional and running accuracy for precise, vibration-free performance. |
| Sealed / Lubricated | The bearing is supplied sealed and pre-lubricated, protecting against contamination and providing long-term, maintenance-free operation within the specified temperature range. |
S7202 ACD/HCP4A Bearing Structural Features & Performance Benefits
High Rigidity and Load Capacity: The angular contact design with a 25° contact angle and preload provides high system rigidity, effectively resisting both radial and axial forces. This makes it capable of handling the specified dynamic load rating of 1609 lbf and static load rating of 720 lbf with high stability.
Superior High-Speed Performance: The hybrid ceramic balls significantly reduce rolling element mass, minimizing centrifugal forces and friction. This, combined with the lightweight phenolic cage, allows the bearing to achieve an exceptional limiting speed of 50,000 rpm.
Precision and Longevity: Manufactured to P4 precision tolerances, this bearing ensures minimal runout and vibration. The integral seals retain lubrication and exclude contaminants, resulting in consistent performance and a long, reliable service life without the need for re-lubrication.
S7202 ACD/HCP4A Bearing Typical Application Areas
The S7202 ACD/HCP4A is ideally suited for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- High-Speed Machine Tool Spindles
- Precision Grinding Spindles
- High-Frequency Motors and Spindles
- Aerospace Actuation Systems
- Advanced Robotics and Automation
