S7008 ACE/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7008 ACE/P4ADGA
Basic Information
System of measurement
Metric
Weight
0.38 kg
Tolerance class
P4A
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
30 mm
Width tolerance
-0.2mm to 0
Contact angle
25 °
Ball & Washer Dimensions
Ball diameter
7.144 mm
Ball quantity
19
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4275 lbf
Radial static load rating
3218 lbf
Limiting speed
41 X 1000 rpm
Lubrication
Grease
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
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
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S7008 ACE/P4ADGA Bearing Product Overview & Core Advantages
The S7008 ACE/P4ADGA is a high-precision double row angular contact ball bearing designed for demanding applications requiring exceptional accuracy and rigidity. Engineered to simultaneously handle combined radial and bidirectional axial loads, this bearing features a compact design ideal for space-constrained, high-reliability installations. Its P4A super-precision tolerance and extra light preload (Class A) ensure smooth, quiet operation with minimal runout, making it a superior choice for high-performance machinery.
S7008 ACE/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACE | 25° contact angle and optimized internal design for high-speed operation. |
| P4A | Denotes a super-precision tolerance class, exceeding ABEC 7/ISO P4 standards for exceptional running accuracy. |
| DGA | Indicates the bearing is sealed and pre-lubricated with grease. |
S7008 ACE/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design provides superior radial and axial stiffness, enabling stable support under combined loads. The 25° contact angle is optimized for sustaining significant bidirectional axial forces.
- Super-Precision Performance: Manufactured to P4A tolerance class with an extra light preload, this bearing guarantees minimal vibration and extreme rotational accuracy for critical spindles.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, contributing to a high limiting speed of 41,000 rpm. The optimized internal geometry further enhances high-speed stability.
- Long-Term Reliability & Low Maintenance: The integrated seals effectively protect against contamination, while the factory-applied grease lubrication ensures long service life without the need for re-lubrication in many applications.
S7008 ACE/P4ADGA Bearing Typical Application Areas
This bearing is ideally suited for high-precision, high-speed machinery, including:
- Machine Tool Spindles (e.g., grinding, milling, and high-speed machining centers)
- Precision Grinding Spindles
- High-Frequency Motors
- Medical and Dental Equipment Spindles
- Aerospace Instrumentation
