S7008 CB/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Main Dimensions
Ball & Washer Dimensions
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S7008 CB/HCP4ADGA Bearing Product Overview & Core Advantages
The S7008 CB/HCP4ADGA is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. As a universal matchable (SU) bearing supplied in a pre-matched pair, it delivers superior rigidity and stability under combined loads. Its construction with a ceramic ball and phenolic cage enables outstanding high-speed performance, while the sealed design and pre-lubrication ensure long-term, maintenance-free operation in precision machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| S7008 | Basic bearing series and size designation (40mm bore, 68mm OD) |
| CB | Specific internal design and clearance for universal matching |
| HC | Hybrid Ceramic construction (steel rings with ceramic balls) |
| P4A | High precision tolerance class (superior to ABEC 7) |
| DGA | Sealed on both sides with special high-performance grease |
S7008 CB/HCP4ADGA Bearing Structural Features & Performance Benefits
Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls significantly reduces friction, heat generation, and wear, enabling higher limiting speeds (41,000 rpm) and extended service life compared to all-steel bearings.
Universal Matchable Design (SU): As a pre-matched pair of two bearings, this arrangement provides enhanced rigidity and precise axial displacement control, making it ideal for applications requiring minimal deflection under combined radial and axial loads.
Phenolic Resin Cage: The lightweight, high-strength phenolic cage contributes to smooth operation at ultra-high speeds and offers excellent dimensional stability under varying thermal conditions.
Sealed & Pre-lubricated: The integrated seals effectively protect against contamination while the special grease lubrication ensures consistent performance across the entire temperature range (-30°C to 110°C), providing a maintenance-free solution.
Extra Light Preload (Class A): This preload class minimizes bearing deflection without generating excessive heat, optimizing performance for high-speed, high-precision applications.
S7008 CB/HCP4ADGA Bearing Typical Application Areas
- High-Speed Machine Tool Spindles for precision machining centers
- Precision Grinding Spindles requiring minimal runout and high rigidity
- High-Frequency Motors and Spindles in semiconductor manufacturing equipment
- Advanced Robotics joints and actuators demanding high accuracy and speed
- Aerospace Control Systems and instrumentation requiring reliable performance
- Medical Device Rotating Assemblies where precision and cleanliness are critical
