7208 CD/P4ADGB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7208 CD/P4ADGB
Basic Information
System of measurement
Metric
Weight
0.75 kg
Tolerance class
P4A
Seal type
Open
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
Lubricated
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
Price:
$ 175.27
/ each
In Stock
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7208 CD/P4ADGB Bearing Product Overview & Core Advantages
The 7208 CD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a pre-set pair, it is engineered to simultaneously handle combined radial and axial loads. Its P4A tolerance class ensures superior dimensional and running accuracy, making it ideal for high-rigidity, high-reliability systems such as machine tool spindles and precision instrumentation.
7208 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7208 | Basic bearing series, indicating a 40 mm bore, 80 mm OD, and 36 mm width. |
| CD | Signifies a universal matchable (SU) pair with a 15° contact angle, optimized for high rigidity and combined loads. |
| P4A | Denotes an ultra-precision tolerance class exceeding ABEC 7 standards, ensuring minimal runout and vibration. |
| DGB | Indicates a light preload (Class B) is applied to the matched pair, enhancing system stiffness and rotational accuracy. |
7208 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The dual bearing arrangement and 15° contact angle provide superior resistance to combined loads, offering high axial and radial stiffness for stable operation.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry supports a high limiting speed of 41,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class with tight dimensional controls, this bearing delivers exceptional running accuracy and low noise levels.
- Material & Lubrication: Components made from high-grade chrome steel ensure durability and wear resistance. The bearing is pre-lubricated for immediate use and reliable performance within a temperature range of -30°C to 110°C.
7208 CD/P4ADGB Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance applications including:
- Machine Tool Spindles
- High-Speed Machining Centers
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Robotic Arm Joints and Precision Instrumentation
