7008 FE/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7008 FE/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.37 kg
Tolerance class
P4A
Seal type
Open
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
43 X 1000 rpm
Lubrication
Lubricated
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
Chrome Steel
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
7008 FE/P4ADBA Bearing Product Overview & Core Advantages
The 7008 FE/P4ADBA is a precision angular contact ball bearing designed for applications requiring exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) matched set features an Extra Light (A) preload and adheres to the stringent P4A tolerance class, making it ideal for high-precision spindles and machinery. Its primary advantage lies in its ability to handle combined loads (radial and axial) simultaneously with high stability, thanks to the optimized 18° contact angle and matched pair configuration. The open design, when properly lubricated, supports high-speed operation up to 43,000 rpm.
7008 FE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series, indicating a 40 mm bore, 68 mm OD, and 30 mm width. |
| FE | Designates a duplex bearing set with a specific preload and matching. |
| P4A | Indicates the high-precision tolerance class, exceeding ABEC 7 standards, for superior running accuracy. |
| DB | Specifies the Back-to-Back arrangement of the matched pair, providing high moment rigidity. |
| A | Denotes an Extra Light preload, minimizing friction and heat generation for high-speed applications. |
7008 FE/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide effective spread, significantly increasing the bearing set's resistance to moment loads and ensuring exceptional operational stability.
- Superior Precision: Manufactured to P4A tolerance class with a bore and OD tolerance of -0.004mm to 0, this bearing guarantees minimal runout and vibration for ultra-precise applications.
- Optimized High-Speed Performance: The phenolic resin cage is lightweight and possesses excellent sliding properties, contributing to lower centrifugal forces and stable operation at the limiting speed of 43,000 rpm. The 18° contact angle is optimized for high-speed axial load capacity.
- High Load Capacity: With a dynamic load rating of 4388 lbf and a static load rating of 3375 lbf, this bearing is engineered to handle significant combined radial and axial loads.
- Premium Material Construction: Made from chrome steel for both rings and balls, ensuring high durability, wear resistance, and long service life under demanding conditions.
7008 FE/P4ADBA Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications where accuracy, speed, and rigidity are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Articulated arms and high-accuracy positioning systems.
- High-Frequency Motors and Spindles: Used in PCB drilling, dental handpieces, and small precision tools.
- Advanced Medical Equipment: Imaging devices (CT/MRI scanners) and surgical robotics.
- Aerospace & Defense Systems: Gyroscopes, navigation instruments, and radar equipment.
