7008/VA9D1
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7008/VA9D1
Basic Information
System of measurement
Metric
Weight
0.19 kg
Tolerance class
P4
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
25 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3578 lbf
Radial static load rating
2340 lbf
Limiting speed
43 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
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/VA9D1 Bearing Product Overview & Core Advantages
The 7008/VA9D1 is a high-precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to a P4 tolerance class, it delivers superior running precision and dimensional stability. Its key advantage lies in its ability to accommodate combined loads—simultaneously handling significant radial and axial forces in one direction. The bearing comes preloaded and is universally matchable (SU), allowing for simplified mounting in pairs to achieve optimal stiffness and performance in high-speed, high-rigidity systems.
7008/VA9D1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7008 | Standard bearing series designation, indicating a metric angular contact ball bearing with a 40mm bore, 68mm OD, and 15mm width. |
| VA9 | Signifies a universally matchable (SU) bearing supplied with a specific preload. This allows any two VA9 bearings to be paired without selective assembly for optimal performance. |
| D1 | Indicates the bearing is lubricated from the factory with a specific grease suitable for its designated operating range. |
7008/VA9D1 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The 25° contact angle and preload are optimized to provide high axial and radial stiffness, enabling the bearing to handle demanding combined loads with minimal deflection.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 43,000 rpm. This makes it an excellent high-speed bearing for precision spindles.
- Precision & Stability: Manufactured to P4 tolerance class with tight dimensional tolerances on bore, OD, and width, ensuring consistent, high-accuracy performance in the most demanding applications.
- Simplified Installation: The Universal Matchable (SU) design eliminates the need for complex selection and matching of bearings, reducing assembly time and ensuring consistent preload and performance in paired arrangements.
7008/VA9D1 Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance machinery requiring high speed, rigidity, and accuracy. Key applications include:
- Machine Tool Spindles (High-speed milling, grinding, and turning centers)
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Medical and Laboratory Equipment
