7208 CD/P4ADGC
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7208 CD/P4ADGC
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
Moderate / Class C
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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7208 CD/P4ADGC Bearing Product Overview & Core Advantages
The 7208 CD/P4ADGC is a precision angular contact ball bearing engineered for applications demanding exceptional rotational accuracy and rigidity. Operating under the stringent P4A tolerance class, this bearing is designed to simultaneously handle combined radial and axial loads. Its universal matchable (SU) design allows for flexible mounting arrangements in pairs, providing high system rigidity and operational stability. The combination of a phenolic cage, moderate preload (Class C), and premium chrome steel construction makes it an ideal solution for high-speed, high-precision machinery.
7208 CD/P4ADGC Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7208 | Basic bearing series, indicating a 40mm bore, 80mm OD, and 36mm width. |
| CD | Contact angle of 15° and specific internal design for optimized load distribution. |
| P4A | High precision tolerance class exceeding ABEC 7, with enhanced running accuracy. |
| DGC | Indicates universal matchable (SU) pairing, allowing for DB, DF, or DT mounting configurations without selective assembly. |
7208 CD/P4ADGC Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design with a 15° contact angle and double-row equivalent arrangement through pairing provides superior stiffness, enabling the bearing to support significant combined loads and moments.
- Precision & High-Speed Performance: Manufactured to P4A tolerance standards with tight dimensional controls (bore/OD tolerance: -0.004mm to 0). The lightweight phenolic resin cage ensures stability and reduced centrifugal forces, contributing to a high limiting speed of 41,000 rpm.
- Optimized Internal Geometry: Features 14 high-grade chrome steel balls of 11.112mm diameter, precisely arranged to maximize load distribution and minimize friction.
- Universal Matching & Simplified Installation: The SU universal match designation eliminates the need for selective pairing, reducing inventory complexity and enabling quick, error-free installation in preloaded sets.
7208 CD/P4ADGC Bearing Typical Application Areas
- Machine Tool Spindles: High-speed milling, grinding, and turning centers requiring extreme precision and rigidity.
- Precision Gearboxes and Robotic Drives where accurate positioning and high dynamic response are critical.
- High-Frequency Motors and Spindles for PCB drilling and semiconductor manufacturing equipment.
- Medical Equipment such as dental handpieces and laboratory centrifuges.
- Aerospace Actuation Systems demanding reliable performance under combined loads.
