7011 CEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7011 CEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.36 kg
Tolerance class
P4A
Seal type
Open
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
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
3
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
Price:
$ 109.74
/ each
In Stock
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7011 CEGA/HCP4A Bearing Product Overview & Core Advantages
The 7011 CEGA/HCP4A is a high-precision angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. As a single bearing with an Extra light (Class A) preload, it delivers superior rotational accuracy and rigidity. Its design is optimized to handle combined loads, efficiently supporting both radial and axial forces. Manufactured to a P4A tolerance class, it guarantees ultra-precise dimensions and runout, making it ideal for high-speed spindles and other critical machinery where reliability is paramount.
7011 CEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7011 | Basic bearing series and size designation (55mm bore, 90mm OD, 18mm width). |
| CE | Contact angle of 15°. |
| GA | Indicates a Universal Matchable (SU) bearing, designed to be paired with other bearings for specific preload and rigidity requirements. |
| HC | Refers to the hybrid ceramic construction, featuring a Chrome Steel ring and Ceramic balls. |
| P4A | Denotes an ultra-high precision tolerance class, exceeding ABEC 7 standards. |
7011 CEGA/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of steel rings and ceramic balls significantly reduces weight and centrifugal forces, enabling higher limiting speeds (34,000 rpm). It also provides superior resistance to wear and operates effectively across a wide temperature range (-30°C to 110°C).
- High Rigidity & Precision: The angular contact design and Class A preload ensure high system stiffness and minimal axial/radial deflection under load, which is critical for maintaining accuracy in machining and positioning.
- Optimized for High-Speed Operation: The lightweight phenolic cage and low-density ceramic balls work in concert to minimize friction and inertial forces, making this bearing an excellent choice for high-speed applications.
- Universal Matching Capability: As a Universal Matchable (SU) bearing, it can be supplied in sets (e.g., 3 bearings) and arranged in tandem, back-to-back, or face-to-face configurations to achieve specific stiffness and load-carrying requirements.
7011 CEGA/HCP4A Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery where speed, accuracy, and reliability are non-negotiable. Key applications include:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Instrumentation
- High-Frequency Motors
- Aerospace & Defense Systems
- Medical Equipment (e.g., Dental handpieces, Centrifuges)
