S7008 ACE/P4ADT
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7008 ACE/P4ADT
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
Duplex Tandem (DT)
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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S7008 ACE/P4ADT Bearing Product Overview & Core Advantages
The S7008 ACE/P4ADT is a precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. This duplex tandem (DT) matched set features a P4A tolerance class and a 25° contact angle, enabling it to handle significant combined loads with high rigidity. Its preloaded configuration ensures minimal axial and radial play, making it ideal for high-speed spindles and other precision machinery where high rigidity and rotational accuracy are paramount.
S7008 ACE/P4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| ACE | Indicates a 25° contact angle and that the bearing is preloaded. |
| P4A | Denotes an ABEC 7 / P4 precision class with specific tolerance enhancements for high-precision applications. |
| DT | Signifies a Duplex Tandem arrangement. Two bearings are mounted together to increase axial load capacity in one direction. |
S7008 ACE/P4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex tandem arrangement and 25° contact angle provide superior stiffness and enable the bearing set to support high combined radial and axial loads.
- Precision Performance: Manufactured to P4A tolerance class with a phenolic cage, this bearing ensures exceptional running accuracy and smooth operation, which is critical for high-speed applications.
- Optimized for Speed: The lightweight phenolic cage and precision-ground components contribute to a high limiting speed of 41,000 rpm, making it suitable for high-speed spindles.
- Durability & Reliability: Constructed from chrome steel for both rings and balls, the bearing offers excellent wear resistance and a long operational life under demanding conditions.
S7008 ACE/P4ADT Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Grinding Equipment
- High-Frequency Motors
- Medical and Dental Handpieces
- Other machinery requiring high rigidity, high-speed capability, and exceptional accuracy.
