S7011 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7011 CEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.37 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
18 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3780 lbf
Radial static load rating
2745 lbf
Limiting speed
46 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
No drawings available at the moment, will be launched soon
In Stock
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S7011 CEGA/HCP4A Bearing Product Overview & Core Advantages
The S7011 CEGA/HCP4A is a super-precision angular contact ball bearing engineered for the most demanding high-speed and high-rigidity applications. As a universal matchable (SU) bearing, it is designed to be mounted in pairs to form a rigid, preloaded set capable of withstanding combined radial and axial loads from both directions. Its construction with a phenolic cage and ceramic balls enables exceptional limiting speeds and operational stability, making it ideal for high-precision spindles where accuracy and reliability are paramount.
S7011 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| CEGA | Specific internal design and clearance for universal matching. | Ensures optimal preload and performance when mounted in pairs. |
| HC | Hybrid Ceramic (Ceramic balls with steel rings). | Reduced centrifugal force, lower operating temperature, and extended service life at high speeds. |
| P4A | High tolerance class (superior to ABEC 7). | Guarantees extreme running accuracy, low vibration, and precise rotational performance. |
S7011 CEGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 15° contact angle and universal matchable design allow two bearings to be paired for a duplex arrangement. This creates a system with high rigidity that can support significant combined loads.
- Exceptional High-Speed Performance: The combination of a lightweight phenolic cage and ceramic balls significantly reduces centrifugal forces and friction, enabling a high limiting speed of 46,000 rpm. This makes it a premier high-speed bearing.
- Precision and Stability: Manufactured to a P4A tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, this bearing ensures minimal runout and vibration for superior rotational accuracy.
- Sealed & Pre-Lubricated: The sealed design with factory-applied grease protects against contamination and provides long-term, maintenance-free operation within its specified temperature range.
S7011 CEGA/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for applications requiring the highest levels of speed and accuracy, including:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- High-Frequency Spindles for PCB drilling and routing
- Precision Robotic Drives and Servo Motors
- Advanced Medical and Dental Equipment
- Aerospace Gyroscopes and Instrumentation
