S7007 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Basic Information
Main Dimensions
Ball & Washer Dimensions
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Materials
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S7007 CEGA/HCP4A Bearing Product Overview & Core Advantages
The S7007 CEGA/HCP4A is a high-precision, single-row angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. Engineered to accommodate combined loads (radial and axial loads in one direction), its key advantages stem from its premium material composition and P4A super-precision tolerance class. The use of ceramic balls significantly reduces centrifugal forces, enabling higher limiting speeds, while the phenolic cage ensures smooth operation at high RPMs. This bearing is universally matchable (SU), allowing for precise preload control when mounted in pairs, making it an ideal solution for high-rigidity and high-reliability spindles and systems.
S7007 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CEGA | Indicates a universally matchable (SU) bearing designed for extra light preload (Class A) when mounted in a back-to-back arrangement. |
| HC | Signifies the use of Hybrid Ceramic balls, which provide benefits such as lower density, reduced friction, and higher speed capability. |
| P4A | Denotes a super-precision tolerance class with running accuracy even tighter than ABEC 7 (P4), ensuring minimal vibration and superior rotational performance. |
S7007 CEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of steel rings and ceramic balls (Si3N4) results in lower friction, reduced operating temperature, and a significantly higher limiting speed (56,000 rpm) compared to all-steel equivalents. This is critical for high-speed spindle applications.
- Phenolic Resin Cage: The lightweight and robust phenolic cage contributes to quiet operation and excellent performance at high rotational speeds, providing stability and durability.
- Precision & Rigidity: Manufactured to P4A super-precision standards with a 15° contact angle, this bearing offers high running accuracy and system rigidity, especially when mounted in a preloaded, universal match pair.
- Sealed & Grease-Lubricated: The sealed design with factory-applied grease provides long-term, maintenance-free operation, protecting against contamination within its specified temperature range (-30°C to 110°C).
S7007 CEGA/HCP4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Speed Motors: Motors for robotics, aerospace, and semiconductor manufacturing equipment.
- Medical Equipment: High-speed handpieces and dental drills.
