S7008 CE/HCP4ADGA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7008 CE/HCP4ADGA
Basic Information
System of measurement
Metric
Weight
0.35 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
40 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
68 mm
Outside diameter tolerance
-0.004mm to 0
Width
30 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4478 lbf
Radial static load rating
3442 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
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
Price:
$ 176.65
/ each
In Stock
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S7008 CE/HCP4ADGA Bearing Product Overview & Core Advantages
The S7008 CE/HCP4ADGA is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and high-speed performance. Engineered to the stringent P4A tolerance class, this bearing is optimized to simultaneously handle combined radial and axial loads. Its universal matchable (SU) design allows for flexible mounting arrangements in preloaded sets, delivering superior operational rigidity and rotational precision. The combination of a ceramic ball material and a phenolic cage contributes to its high-speed capabilities, reduced weight, and extended service life, making it an ideal solution for high-reliability machinery.
S7008 CE/HCP4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance & Advantage |
|---|---|---|
| CE | Ceramic Balls (Hybrid) | Indicates the use of ceramic rolling elements, which reduce centrifugal forces, lower operating temperatures, and provide electrical insulation, enabling higher limiting speeds and longer life. |
| HC | Phenolic Resin Cage | Specifies a lightweight, high-strength phenolic cage that offers excellent dimensional stability and low friction, ideal for high-speed operation. |
| P4A | High Precision Tolerance Class | Denotes extremely tight dimensional and running accuracy tolerances, ensuring minimal runout and vibration for precision applications. |
| A | 30° Contact Angle (Standard) | Represents the standard contact angle, optimized for a balanced capacity to handle both radial and axial loads. |
| DGA | Grease Lubrication, Sealed | Signifies that the bearing is sealed and pre-lubricated with a specific grease, offering protection from contaminants and providing maintenance-free operation. |
S7008 CE/HCP4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design with a 15° contact angle and universal matchable pairing creates a highly rigid bearing system capable of supporting significant combined loads (radial and axial) from both directions.
- Superior High-Speed Performance: The hybrid ceramic balls significantly reduce mass and centrifugal loading, while the lightweight phenolic cage ensures stable guidance at the limiting speed of 41,000 rpm. This combination minimizes heat generation and allows for exceptional rotational accuracy.
- Precision Engineering: Manufactured to P4A tolerance class with tight bore and outside diameter tolerances, this bearing guarantees minimal runout and vibration, which is critical for precision spindles and other high-accuracy machinery.
- Enhanced Durability & Maintenance-Free Operation: The integrated seals effectively shield the internal components from contaminants. Pre-lubrication with high-performance grease suitable for a temperature range of -30°C to 110°C ensures long-term, reliable performance without the need for re-lubrication.
S7008 CE/HCP4ADGA Bearing Typical Application Areas
The S7008 CE/HCP4ADGA is ideally suited for high-performance applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and CNC milling machines.
- Precision Instrumentation: High-speed measuring devices, optical scanners, and coordinate measuring machines (CMM).
- Industrial Pumps & Compressors: High-speed centrifugal pumps and compressor shafts requiring precise axial location.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other critical rotating assemblies.
- High-Frequency Motors & Spindles: Electric motor spindles and other applications demanding low vibration and high rotational accuracy.
