S7005 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
Performance
Materials
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S7005 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The S7005 CE/HCP4ADBA is a high-precision, duplex back-to-back angular contact ball bearing designed for exceptional performance in demanding applications. This matched set of two bearings is engineered to provide superior high rigidity and handle significant combined loads (radial and axial) simultaneously. Featuring a P4A super-precision tolerance class, ceramic balls, and a phenolic cage, it is optimized for high-speed operation and offers outstanding rotational accuracy and long-term reliability.
S7005 CE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning | Significance & Advantage |
|---|---|---|
| S7005 | Bearing series and size designation (25mm bore, 47mm OD). | Defines the core bearing dimensions. |
| C | 15° contact angle. | Optimized for high-speed performance and moderate axial load capacity. |
| E | Optimized internal design. | Enhanced performance for speed and load. |
| HC | Hybrid Ceramic (Silicon Nitride balls). | Reduces friction, increases limiting speed, and provides non-conductive properties and longer service life. |
| P4A | Tolerance class equivalent to ABEC 7 / ISO P4. | Guarantees extremely tight dimensional and running accuracy for high-precision applications. |
| A | Extra Light Preload. | Minimizes runout and increases system rigidity without generating excessive heat. |
| DB | Duplex Back-to-Back arrangement. | Provides high moment stiffness and can accommodate axial loads from both directions. |
S7005 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
Duplex Back-to-Back (DB) Design: This configuration creates a wide, rigid support system that is exceptionally resistant to moment loads, making it ideal for spindle applications where high rigidity is critical.
Hybrid Ceramic Construction: The use of ceramic balls with a steel ring significantly reduces centrifugal forces, lowers operating temperature, and allows for a higher limiting speed (83,000 rpm) compared to all-steel equivalents. This also provides electrical insulation.
Phenolic Resin Cage: This lightweight and robust cage material contributes to smooth operation at ultra-high speeds and offers excellent dimensional stability.
Super-Precision P4A Tolerance: Manufactured to the tightest tolerances, this bearing ensures minimal vibration and superior running accuracy, which is essential for applications requiring high surface finish and positional precision.
Sealed & Pre-lubricated: The sealed design with factory-applied grease lubrication protects against contamination and provides maintenance-free operation within the specified temperature range of -30°C to 110°C.
S7005 CE/HCP4ADBA Bearing Typical Application Areas
The S7005 CE/HCP4ADBA is ideally suited for high-performance machinery requiring extreme precision, speed, and rigidity. Key application areas include:
- High-Frequency Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision Robotic Drives and Servo Motors
- High-Speed Dental and Medical Handpieces
- Aerospace Gyroscopes and Instrumentation
- Semiconductor Manufacturing Equipment
