S7204 CD/P4ADGA
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7204 CD/P4ADGA
Basic Information
System of measurement
Metric
Weight
0.21 kg
Tolerance class
P4A
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
20 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.004mm to 0
Width
28 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
11
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
4388 lbf
Radial static load rating
2610 lbf
Limiting speed
75 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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S7204 CD/P4ADGA Bearing Product Overview & Core Advantages
The S7204 CD/P4ADGA is a precision double row angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Engineered to the exacting P4A tolerance class, this bearing excels at simultaneously handling combined radial and axial loads from both directions. Its compact design, featuring a universal matchable (SU) arrangement, provides high running accuracy and stability, making it ideal for high-speed spindles and other high-precision, high-reliability machinery.
S7204 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| S | Stainless Steel (AISI 440C) bearing rings and balls |
| 7204 | Basic bearing series and size designation (20mm bore, 47mm OD, 28mm width) |
| CD | 15° contact angle and optimized internal design for high-speed operation |
| P4A | High precision tolerance class (superior to ABEC-7), ensuring minimal runout and vibration |
| DGA | Sealed on both sides and pre-lubricated with high-performance grease |
S7204 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The double row angular contact design provides superior radial and axial stiffness, enabling stable performance under combined loads. The 15° contact angle is optimized for supporting significant axial loads in both directions.
- Exceptional High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, contributing to a high limiting speed of 75,000 rpm. The precision-ground components and optimized internal geometry reduce friction and heat generation.
- Corrosion Resistance & Long Service Life: Manufactured from chrome steel (AISI 440C), the bearing offers excellent corrosion resistance, which is critical for applications in challenging environments.
- Maintenance-Free Operation: The integral seals and factory-applied grease lubrication provide long-term, maintenance-free operation within a wide temperature range of -30°C to 110°C.
S7204 CD/P4ADGA Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for:
- High-Speed Machine Tool Spindles
- Precision Grinding Applications
- High-Frequency Motors and Spindles
- Medical and Dental Equipment
- Semiconductor Manufacturing Equipment
- Aerospace Instrumentation and Control Systems
