S7008/VA9D1
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7008/VA9D1
Basic Information
System of measurement
Metric
Weight
0.19 kg
Tolerance class
P4
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
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
41 X 1000 rpm
Lubrication
Grease
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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S7008/VA9D1 Bearing Product Overview & Core Advantages
The S7008/VA9D1 is a precision angular contact ball bearing designed for applications demanding exceptional rigidity and running accuracy. As a single bearing with preload, it delivers superior rotational stability and minimizes axial/radial deflection. Its P4 tolerance class ensures high-precision performance, making it ideal for high-speed spindles and other critical machinery where high rigidity and precise shaft positioning are paramount. The bearing is pre-lubricated with grease and sealed for life, offering reliable, maintenance-free operation.
S7008/VA9D1 Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S7008 | Basic bearing designation, indicating a metric series, 40mm bore, 68mm OD angular contact ball bearing. |
| VA9 | Indicates a specific preload level applied to the bearing for enhanced rigidity. |
| D1 | Signifies that the bearing is part of a Universal Matchable (SU) set. Two bearings can be paired in a universal arrangement to support combined loads. |
S7008/VA9D1 Bearing Structural Features & Performance Benefits
- High Rigidity & Preload: The bearing is supplied with a defined preload, significantly increasing system stiffness, reducing vibration, and improving rotational accuracy under operational loads.
- Superior Load Capacity: The 25° contact angle and robust design enable it to handle substantial axial loads in one direction as well as radial loads, making it suitable for combined load applications.
- High-Speed Capability: The lightweight phenolic cage and precision-ground chrome steel components contribute to low friction and stable operation at high speeds, with a limiting speed of 41,000 rpm.
- Maintenance-Free Operation: As a sealed and pre-greased unit, it is protected from contamination and retains lubrication, ensuring long service life without maintenance.
- Precision Engineering: Manufactured to P4 tolerance with tight dimensional control on bore, OD, and width for predictable and precise performance in demanding applications.
S7008/VA9D1 Bearing Typical Application Areas
This bearing is engineered for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Grinding Spindles
- High-Frequency Motors
- Industrial Pumps and Compressors
- Robotic Arm Joints and Drives
