S7205 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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S7205 CD/HCP4A Bearing Product Overview & Core Advantages
The S7205 CD/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. This sealed, preloaded single bearing is designed to accommodate combined loads, offering high rigidity and superior running accuracy. Its construction with a phenolic cage and ceramic balls enables high-speed operation, while the P4 (ABEC-7) tolerance class ensures reliable performance in precision machinery and high-rotation equipment.
S7205 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| CD | 15° contact angle, optimized internal design | Superior high-speed performance and axial load capacity |
| HC | Hybrid Ceramic (Silicon Nitride balls) | Reduced friction, higher speed capability, and longer service life |
| P4A | ABEC-7/P4 precision class with specific running accuracy | Exceptional rotational accuracy and minimal vibration |
S7205 CD/HCP4A Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings with silicon nitride ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (38,000 rpm) and extended service life.
High Rigidity & Preload: As a preloaded single bearing, the S7205 CD/HCP4A delivers high rigidity and precise shaft positioning without requiring complex mounting arrangements, making it ideal for applications demanding minimal deflection.
Optimized for High Speeds: The phenolic resin cage is lightweight and withstands high centrifugal forces, contributing to the bearing's exceptional high-speed performance. The 15° contact angle is optimized for applications where high rotational speeds are critical.
Sealed & Lubricated for Life: The integrated seals protect against contamination and retain lubricant, making the bearing maintenance-free and suitable for the specified operating temperature range of -30°C to 110°C.
S7205 CD/HCP4A Bearing Typical Application Areas
- High-Speed Machine Tool Spindles
- Precision Grinding Applications
- High-Frequency Motors and Spindles
- Medical and Dental Equipment
- Aerospace Instrumentation
- Semiconductor Manufacturing Equipment
