S7008 FEGA/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7008 FEGA/HCP4A
Basic Information
System of measurement
Metric
Weight
0.17 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
15 mm
Width tolerance
-0.2mm to 0
Contact angle
18 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2722 lbf
Radial static load rating
1688 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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S7008 FEGA/HCP4A Bearing Product Overview & Core Advantages
The S7008 FEGA/HCP4A is a high-precision, single-row angular contact ball bearing engineered for demanding applications. Its core advantage lies in its ability to support combined loads (radial and axial) simultaneously with exceptional accuracy and rigidity. Manufactured to P4A tolerance class, it guarantees ultra-precise running accuracy. The combination of a ceramic ball material and phenolic cage enables superior high-speed performance and reduced rotational mass. This bearing is pre-lubricated with grease and sealed for life, offering a reliable, maintenance-free solution for high-performance machinery.
S7008 FEGA/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7008 | Basic bearing series and size designation (40mm bore, 68mm OD). |
| FE | Indicates a phenolic (resin) cage, which is lightweight and ideal for high speeds and acceleration. |
| GA | Specifies a contact angle of 18°, optimized for supporting significant axial loads. |
| HC | Denotes hybrid ceramic balls (silicon nitride), offering higher speed capability, reduced weight, and longer service life. |
| P4A | The tolerance class, signifying extremely high precision with tight dimensional and running accuracy tolerances. |
S7008 FEGA/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row design, manufactured to P4A tolerances, provides exceptional dimensional stability and running accuracy, which is critical for applications requiring minimal deflection.
- Superior Load Capacity: With a defined 18° contact angle, this bearing is engineered to handle substantial axial loads in one direction while also supporting radial loads effectively.
- Exceptional High-Speed Performance: The combination of a lightweight phenolic cage (FE) and low-density ceramic balls (HC) significantly reduces centrifugal forces, enabling a high limiting speed of 41,000 rpm.
- Universal Matching Capability (SU): This bearing is universally matchable, meaning two bearings can be paired in a back-to-back (DB) or face-to-face (DF) arrangement to support axial loads in both directions, enhancing application flexibility.
- Sealed and Lubricated for Life: The sealed construction with pre-applied grease lubrication protects against contamination and ensures long-term, maintenance-free operation within the specified temperature range.
S7008 FEGA/HCP4A Bearing Typical Application Areas
This high-performance bearing is ideally suited for:
- Machine Tool Spindles
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Motors and Drives
- Aerospace and Defense Systems
- Medical and Dental Equipment
