7006 CEGB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7006 CEGB/HCP4A
Basic Information
System of measurement
Metric
Weight
0.1 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
30 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
55 mm
Outside diameter tolerance
-0.004mm to 0
Width
13 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
17
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2106 lbf
Radial static load rating
1170 lbf
Limiting speed
100.5 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
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In Stock
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7006 CEGB/HCP4A Bearing Product Overview & Core Advantages
The 7006 CEGB/HCP4A is a high-precision angular contact ball bearing engineered for applications demanding exceptional accuracy and performance. Its defining feature is its Universal Matchable (SU) designation, allowing two bearings to be precisely paired for optimal preload and rigidity in a back-to-back (DB) or face-to-face (DF) arrangement. Manufactured to the stringent P4A tolerance class, this bearing delivers superior running accuracy, high-speed capability, and reliable operation under combined radial and axial loads. The use of a phenolic resin cage and ceramic balls further enhances its high-speed performance and longevity.
7006 CEGB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Interpretation | Technical Significance |
|---|---|---|
| 7006 | Basic Bearing Number | Indicates a metric series bearing with a 30mm bore, 55mm OD, and 13mm width. |
| C | 15° Contact Angle | Optimized for high-speed applications and moderate axial load capacity. |
| E | Optimized Internal Design | Enhanced internal geometry for increased load rating and speed capability. |
| GB | Light Preload / Class B | The bearing is supplied with a light preload, reducing deflection and improving system rigidity. |
| HC | Hybrid Ceramic | Features ceramic balls for reduced friction, lower heat generation, and extended service life at high speeds. |
| P4A | Tolerance Class | Denotes a high-precision bearing with extremely tight dimensional and running accuracy tolerances. |
7006 CEGB/HCP4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: The P4A tolerance class ensures minimal runout and vibration, which is critical for precision spindles. When universally matched, the pair provides a highly rigid, pre-loaded system.
- Superior High-Speed Performance: The combination of a lightweight phenolic resin cage and low-density, hard ceramic (Si3N4) balls significantly reduces centrifugal forces, enabling operation at the high limiting speed of 100,500 rpm.
- Excellent Load Capacity: The optimized "E" design internal geometry provides a high dynamic load rating (2106 lbf), allowing it to handle significant combined loads.
- Reduced Friction and Heat: Ceramic balls have a lower coefficient of thermal expansion and are lighter than steel balls, leading to less friction, lower operating temperatures, and reduced risk of thermal seizure.
- Universal Matching Capability (SU): This feature allows for selective pairing of two bearings to achieve a specific preload without the need for complex shimming, simplifying installation and ensuring consistent performance.
7006 CEGB/HCP4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery where speed, precision, and reliability are paramount. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing spindles.
- High-Frequency Motors: Spindles for electric motors and generators operating at very high RPMs.
- Aerospace and Defense Systems: Gyroscopes, navigation instruments, and other critical rotating assemblies.
- Dental and Medical Handpieces: Requiring high speeds and smooth, quiet operation.
