S7008 ACDGC/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7008 ACDGC/P4A
Basic Information
System of measurement
Metric
Weight
0.19 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
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
Moderate / Class C
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
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In Stock
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S7008 ACDGC/P4A Bearing Product Overview & Core Advantages
The S7008 ACDGC/P4A is a high-precision, single-row angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to accommodate combined loads (radial and axial loads in one direction), this bearing features a 25° contact angle and P4A super-precision tolerance class, making it ideal for high-speed spindles and other precision machinery. Its sealed design and pre-lubrication with grease ensure reliable, long-term performance with minimal maintenance.
S7008 ACDGC/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Significance |
|---|---|---|
| AC | Angular Contact | Optimized for combined radial and axial loads. |
| DGC | Contact Angle & Cage Design | Specifies the 25° contact angle and phenolic cage for high-speed operation. |
| P4A | Tolerance Class | Denotes super-precision running accuracy, tighter than ABEC 7. |
S7008 ACDGC/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The single-row design with a 25° contact angle provides excellent rigidity and can support significant combined loads.
- Superior High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 41,000 rpm. This makes it a true high-speed bearing.
- Precision & Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for high-precision applications.
- Universal Matching & Sealed for Life: Designed as a Universal Matchable (SU) bearing, it can be paired in sets for duplex arrangements. The integral seals protect against contamination, and the pre-applied grease provides lubrication across a wide temperature range (-30°C to 110°C), offering a maintenance-free solution.
S7008 ACDGC/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance machinery requiring precision and speed, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Drives and Servo Motors
