7208 ACD/P4ADGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7208 ACD/P4ADGA
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
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
14
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
11700 lbf
Radial static load rating
10238 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
Extra light / Class A
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 ACD/P4ADGA Bearing Product Overview & Core Advantages
The 7208 ACD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and high-speed performance. As a universal matchable (SU) bearing supplied in a pre-set pair, it is engineered to accommodate combined loads—simultaneously handling significant radial and axial forces. Its P4A tolerance class ensures ultra-precise dimensional and running accuracy, making it ideal for high-rigidity, high-reliability systems. The phenolic cage and optimized contact angle of 25° contribute to its superior high-speed capabilities and smooth operation.
7208 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7208 | Basic bearing series, indicating a 40mm bore, 80mm OD, and 36mm width. |
| AC | Angular Contact design with a 25° contact angle. |
| D | Signifies two bearings in a universal matchable (SU) set. |
| P4A | High precision tolerance class, exceeding ABEC 7/ISO P4 standards, with enhanced running accuracy. |
| DGA | Indicates an extra light preload (Class A) and universal matching arrangement. |
7208 ACD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The universal matchable pair creates a pre-loaded set that provides superior stiffness and stability, effectively managing combined radial and axial loads from both directions.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, while the 25° contact angle and precision grinding contribute to a high limiting speed of 41,000 rpm.
- Precision Engineering: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for maintaining accuracy in high-speed spindles.
- Material & Lubrication: Constructed from chrome steel for both rings and balls, offering high durability and fatigue resistance. The bearing is pre-lubricated for immediate operation.
7208 ACD/P4ADGA Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed machining centers, grinding spindles)
- Precision Rotary Systems
- High-Frequency Motors
- Medical and Dental Equipment Spindles
- Aerospace Control Systems
