S7201 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
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S7201 CD/HCP4A Bearing Product Overview & Core Advantages
The S7201 CD/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional speed, rigidity, and accuracy. As a single-row bearing, it is optimized to handle combined loads, primarily high radial loads and significant axial loads in one direction. Its P4 (ABEC-7) tolerance class and the use of ceramic balls contribute to superior running accuracy and low heat generation, making it ideal for high-reliability and high-speed applications.
S7201 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| S7201 | Denotes the bearing series and size (12mm bore, 32mm OD). |
| CD | Indicates a 15° contact angle and high rigidity design. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4 | Specifies the precision tolerance class (ABEC-7). |
| Sealed / Lubricated | The bearing is pre-lubricated and sealed for life, offering maintenance-free operation. |
S7201 CD/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat buildup, and wear. This allows for a higher limiting speed (67,000 rpm) and longer service life compared to all-steel bearings.
High Rigidity & Load Capacity: The 15° contact angle and robust design provide excellent stiffness, enabling the bearing to withstand high radial dynamic loads (1316 lbf) and axial loads simultaneously.
Precision & Speed: The P4 tolerance ensures minimal runout and vibration. The lightweight phenolic cage is ideal for high-speed operation, providing stability and reducing centrifugal forces.
Maintenance-Free Operation: As a sealed and pre-lubricated bearing, it is protected from contamination and is lubricated for life within its specified temperature range (-30° to 110 °C), eliminating the need for re-lubrication.
S7201 CD/HCP4A Bearing Typical Application Areas
This high-performance bearing is ideally suited for demanding applications such as:
- High-Speed Machine Tool Spindles
- Precision Robotics and Automation
- Medical and Dental Equipment
- Aerospace Instrumentation
- High-Frequency Motors and Turbomachinery
