S7009 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7009 CEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.23 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
45 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
75 mm
Outside diameter tolerance
-0.004mm to 0
Width
16 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
21
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2925 lbf
Radial static load rating
1912 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Grease
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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S7009 CEGA/HCP4A Bearing Product Overview & Core Advantages
The S7009 CEGA/HCP4A is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and speed. Engineered as a universally matchable (SU) single bearing with an extra light preload (Class A), it delivers superior rotational stability and minimal running torque. Its key advantage lies in its ability to handle combined loads efficiently, thanks to a 15° contact angle. The use of a phenolic cage and ceramic balls enables outstanding high-speed performance up to 41,000 rpm, while the sealed design with grease lubrication ensures long-term, maintenance-free operation.
S7009 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CEGA | Specific internal bearing design, likely indicating optimized internal geometry for high precision and performance. |
| HC | Hybrid Ceramic: Denotes the use of ceramic balls for reduced friction, higher speed capability, and longer service life. |
| P4A | Indicates a super-precision tolerance class, ensuring extremely tight dimensional and running accuracy for the most critical applications. |
S7009 CEGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class with a universal matching (SU) design, this bearing provides exceptional running accuracy and system stiffness when mounted in pairs.
- Superior High-Speed Capability: The combination of a lightweight phenolic resin cage and low-density silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, enabling stable operation at the high limiting speed of 41,000 rpm.
- Enhanced Load Capacity: The 15° contact angle is optimized to support significant combined radial and axial loads simultaneously.
- Maintenance-Free Operation: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is ready for installation, offering a long service life without relubrication within its specified temperature range of -30°C to 110°C.
S7009 CEGA/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where precision, speed, and reliability are paramount. Key applications include:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Motors and Spindles
- Aerospace Instrumentation
- Medical and Dental Handpieces
