S7208 ACD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7208 ACD/P4ADGA
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
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
Grease
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
In Stock
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S7208 ACD/P4ADGA Bearing Product Overview & Core Advantages
The S7208 ACD/P4ADGA is a high-precision double row angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to simultaneously handle combined loads (radial and bidirectional axial loads), its compact design offers a robust solution for high-reliability machinery. Manufactured to the exacting P4A tolerance class, this bearing ensures superior running accuracy, making it ideal for high-speed spindles and precision equipment. The universal matchable (SU) design allows for flexible mounting arrangements in sets, providing simplified installation and optimal performance.
S7208 ACD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
The model number S7208 ACD/P4ADGA is decoded as follows:
- S7: Series designation, indicating a high-precision angular contact bearing series.
- 208: Standard size designation (40mm bore, 80mm OD, 36mm width).
- A: Contact angle of 25 degrees.
- CD: Universal Matchable (SU) bearing designed for duplex mounting in either a back-to-back (DB) or face-to-face (DF) arrangement.
- P4A: Tolerance class, denoting very high dimensional and running accuracy exceeding ABEC 7 / ISO P4.
- DGA: Indicates the bearing is pre-lubricated with a specific grease suitable for the specified temperature range.
S7208 ACD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row design and 25° contact angle provide significantly higher rigidity and the ability to support substantial combined loads and bidirectional axial loads compared to single row bearings.
- Precision & High-Speed Performance: Built to P4A tolerance class with a phenolic cage, this bearing achieves excellent running accuracy and stability, enabling smooth operation at high speeds (limiting speed of 41,000 rpm).
- Optimized for Matched Sets: The Universal Matchable (SU) feature means bearings can be universally paired in a back-to-back or face-to-face arrangement without selective matching, simplifying inventory and assembly while ensuring preload consistency.
- Long-Term Reliability: The sealed design with factory-applied grease lubrication offers protection from contamination and provides maintenance-free operation within a wide temperature range (-30°C to 110°C).
S7208 ACD/P4ADGA Bearing Typical Application Areas
This precision bearing is ideally suited for high-performance applications including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Medical and Laboratory Equipment
