S7008 CDGB/P4A
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7008 CDGB/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
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3780 lbf
Radial static load rating
2475 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
Light / Class B
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 CDGB/P4A Bearing Product Overview & Core Advantages
The S7008 CDGB/P4A is a precision angular contact ball bearing designed for high-performance applications requiring exceptional rotational accuracy and rigidity. As a single bearing from a universally matchable (SU) set, it excels at accommodating combined radial and axial loads simultaneously. Manufactured to a P4A tolerance class, it guarantees ultra-precise dimensions and running accuracy, making it ideal for high-speed spindles and other demanding machinery where high rigidity and minimal runout are critical.
S7008 CDGB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7008 | Basic bearing series designation. |
| C | 15° contact angle. |
| DGB | A specific manufacturer's code indicating light preload (Class B). |
| P4A | High precision tolerance class, exceeding ABEC 7 standards, for superior running accuracy. |
S7008 CDGB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The optimized internal geometry with a 15° contact angle provides excellent support for combined loads, ensuring stable operation under demanding conditions.
- 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 Engineering: The P4A tolerance class ensures minimal vibration and precise shaft positioning, which is critical for applications like machine tool spindles.
- Universal Matchability (SU): This bearing is designed to be universally matched with another identical bearing to form a pre-loaded pair, simplifying installation and optimizing system performance.
- Sealed & Lubricated for Life: As a sealed bearing pre-lubricated with grease, it is protected from contamination and is ready for immediate use, offering long-term, maintenance-free operation within its specified temperature range.
S7008 CDGB/P4A Bearing Typical Application Areas
This precision angular contact ball bearing is engineered for high-performance machinery, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: High-frequency motors and spindles.
- Industrial Pumps and Compressors: Where reliability and speed are paramount.
- Robotics and Automation: High-accuracy rotary joints and arms.
- Medical and Dental Equipment: High-speed handpieces and scanners.
