S7008 FE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7008 FE/HCP4ADBA
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
18 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4388 lbf
Radial static load rating
3375 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Grease
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
S7008 FE/HCP4ADBA Bearing Product Overview & Core Advantages
The S7008 FE/HCP4ADBA is a precision duplex angular contact ball bearing designed for exceptional performance in demanding applications. This metric series bearing features a back-to-back (DB) matched arrangement of two bearings, providing superior high rigidity and stability. Its construction, utilizing ceramic balls and a phenolic cage, is engineered for high-speed operation and the ability to handle combined loads (radial and axial) simultaneously. Preloaded to Extra Light / Class A and manufactured to P4A tolerance class, it delivers unmatched accuracy and reliability for critical machinery.
S7008 FE/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7008 | Basic bearing series designation. |
| FE | Indicates a back-to-back (DB) duplex matched set. |
| HC | Signifies the use of Hybrid Ceramic balls (Silicon Nitride). |
| P4A | Denotes an ultra-precision tolerance class, superior to ABEC 7. |
| A | Specifies an Extra Light preload for minimal friction and high speed. |
| DBA | Confirms the Duplex Back-to-Back arrangement with preload. |
S7008 FE/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a rigid bearing system that effectively resists moment loads, making it ideal for applications requiring high positional accuracy.
- Superior High-Speed Performance: The combination of low-density ceramic balls reduces centrifugal force and a lightweight phenolic cage ensures stable operation at the high limiting speed of 41,000 rpm.
- Enhanced Load Capacity: The 18° contact angle is optimized to handle significant combined radial and axial loads, providing versatile performance.
- Reduced Friction & Heat Generation: Ceramic balls have a lower coefficient of thermal expansion and superior smoothness compared to steel, leading to less friction, lower operating temperatures, and extended lubricant life.
- Precision & Longevity: Manufactured to P4A tolerance with a Class A preload, this bearing ensures minimal runout and consistent performance, directly contributing to extended service life in precision equipment.
S7008 FE/HCP4ADBA Bearing Typical Application Areas
- High-Speed Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision Robotics and Automation Arms
- High-Frequency Motors and Spindles
- Advanced Medical Equipment (e.g., dental handpieces, imaging devices)
- Aerospace Actuation Systems and Instrumentation
- Semiconductor Manufacturing Equipment
