7008 FE/P4A
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7008 FE/P4A
Basic Information
System of measurement
Metric
Weight
0.19 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
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
43 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
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.
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7008 FE/P4A Bearing Product Overview & Core Advantages
The 7008 FE/P4A is a single-row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and rigidity. Operating under a P4A tolerance class, this bearing delivers superior running precision. Its key advantage lies in its ability to support combined loads (radial and axial) simultaneously, with the contact angle optimized for efficient axial load carrying. The phenolic cage and precision-ground components enable high-speed operation, making it ideal for demanding, high-accuracy machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Basic bearing series and size designation (40mm bore, 68mm OD, 15mm width). |
| FE | Designates a specific internal design with a contact angle of 18° and optimized internal geometry. |
| P4A | Indicates a high-precision tolerance class with extremely tight dimensional and running accuracy tolerances. |
7008 FE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance class standards, the bearing ensures minimal runout and vibration, providing stable and precise shaft guidance essential for high-accuracy equipment.
- Optimized Load Capacity: The 18° contact angle is engineered to handle significant axial loads in one direction while also supporting substantial radial loads, making it suitable for combined load scenarios.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, lowers friction, and contributes to a high limiting speed of 43,000 rpm, which is critical for high-speed spindle applications.
- Pre-Lubricated for Immediate Use: The bearing comes lubricated from the factory, ensuring optimal performance from initial startup and reducing maintenance requirements.
7008 FE/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for applications where high rotational accuracy and speed are paramount. Key industries and machinery include:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Grinding Equipment
- High-Frequency Motors
- Medical and Dental Equipment Spindles
- Aviation and Aerospace Instrumentation
