S7208 CD/P4ADGB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7208 CD/P4ADGB
Basic Information
System of measurement
Metric
Weight
0.75 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
80 mm
Outside diameter tolerance
-0.004mm to 0
Width
36 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
12442 lbf
Radial static load rating
10800 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
Light / Class B
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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S7208 CD/P4ADGB Bearing Product Overview & Core Advantages
The S7208 CD/P4ADGB is a precision double row angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to a P4A tolerance class, it excels in high-speed operations, with a limiting speed of 41,000 rpm. Its core strength lies in its ability to support combined loads—simultaneously handling significant radial loads and bidirectional axial loads—thanks to its optimized 15° contact angle and Universal Matchable (SU) design. This makes it an ideal, compact solution for high-reliability and high-precision machinery.
S7208 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Specifies a 15° contact angle and a specific internal design optimized for high rigidity and load capacity. |
| P4A | Indicates a super-precision tolerance class, exceeding ABEC 7 standards, for superior running accuracy and minimal vibration. |
| DGB | Denotes a Universal Matchable (SU) bearing pair, pre-configured for a specific preload (Light / Class B) when mounted together. |
S7208 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Load Capacity: The double row angular contact design provides a robust, compact footprint capable of supporting high combined radial and axial loads (Dynamic: 12,442 lbf, Static: 10,800 lbf). The 15° contact angle is optimized for high-speed stability and axial load support.
- Superior High-Speed Performance: The phenolic cage ensures low friction and high strength at elevated speeds, contributing to the high limiting speed of 41,000 rpm. The precision P4A grading minimizes vibration for smooth operation.
- Pre-optimized Matched Set: As a Universal Matchable (SU) pair, two bearings are selectively matched to provide a defined light preload (Class B) upon installation. This eliminates complex setup, ensures immediate optimal performance, and enhances system stiffness.
- Sealed and Lubricated for Life: The sealed construction protects against contamination. Pre-lubricated with grease, it operates reliably within a -30°C to 110°C range, offering a long service life with minimal maintenance.
S7208 CD/P4ADGB Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Advanced Robotics and Automation Systems
