S7005/VA9D1
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7005/VA9D1
Basic Information
System of measurement
Metric
Weight
0.079 kg
Tolerance class
P4
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.004mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
2077 lbf
Radial static load rating
1125 lbf
Limiting speed
83 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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S7005/VA9D1 Bearing Product Overview & Core Advantages
The S7005/VA9D1 is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and reliability. Engineered to a P4 tolerance class, it offers superior running accuracy and dimensional stability. This bearing is distinguished by its universal matching (SU) capability, allowing two bearings to be mounted in a preloaded arrangement (face-to-face or back-to-back) to achieve optimal system rigidity and performance. Its sealed design and pre-lubrication with grease ensure long-term, maintenance-free operation, making it an ideal choice for high-speed spindles and precision machinery.
S7005/VA9D1 Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7005 | Denotes the basic bearing series, a metric size with a 25mm bore, 47mm OD, and 12mm width. |
| VA9 | Indicates a universally matchable (SU) bearing. Two such bearings can be paired to create a preloaded set for high rigidity. |
| D1 | Specifies a 25° contact angle, optimized for carrying significant combined loads (radial and axial). |
S7005/VA9D1 Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design with a 25° contact angle enables the bearing to efficiently support substantial combined radial and axial loads in one direction. The universal matching feature allows for preloaded pairs, dramatically increasing system stiffness.
- High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 83,000 rpm. This makes it suitable for high-speed applications.
- Precision & Durability: Manufactured to P4 tolerance with chrome steel rings and balls, this bearing guarantees exceptional running accuracy, low noise, and long service life under precise operating conditions.
- Maintenance-Free Operation: The sealed construction and factory-applied grease lubrication protect against contamination and provide reliable operation across a wide temperature range (-30°C to 110°C), eliminating the need for re-lubrication.
S7005/VA9D1 Bearing Typical Application Areas
This bearing is engineered for high-performance machinery where precision and speed are critical. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Instrumentation: Measuring devices and laboratory equipment.
- High-Frequency Motors: Spindles for PCB drilling and other high-RPM electric motors.
- Robotics: High-accuracy joints and arm assemblies.
