7204 CD/P4ADGA
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7204 CD/P4ADGA
Basic Information
System of measurement
Metric
Weight
0.21 kg
Tolerance class
P4A
Seal type
Open
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
100.5 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:
$ 117.42
/ each
In Stock
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7204 CD/P4ADGA Bearing Product Overview & Core Advantages
The 7204 CD/P4ADGA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and high-speed performance. As part of the Universal Matchable (SU) series, it is engineered to be mounted in pairs to form a rigid, preloaded set capable of handling combined radial and axial loads. Its P4A tolerance class and extra light preload (Class A) ensure smooth, quiet operation with minimal runout, making it ideal for high-precision spindles and other critical machinery.
7204 CD/P4ADGA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7204 | Basic bearing series, indicating a metric angular contact ball bearing with a 20 mm bore, 47 mm OD, and 28 mm width. |
| CD | Contact angle of 15° and Universal Matchable (SU) design for duplex mounting. |
| P4A | High precision tolerance class (superior to ABEC 7), ensuring extremely tight dimensional and running accuracy. |
| DGA | Indicates the bearing is supplied as part of a universally matched set of two bearings, pre-configured for optimal performance when mounted in a back-to-back (DB), face-to-face (DF), or tandem (DT) arrangement. |
7204 CD/P4ADGA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The angular contact design with a 15° contact angle and the ability to be mounted in a universally matched pair provides exceptional system rigidity. This configuration effectively supports combined radial and axial loads from both directions.
- Superior High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, while the optimized internal geometry contributes to a high limiting speed of 100,500 rpm. The open design allows for efficient lubrication management in high-speed systems.
- Exceptional Precision: Manufactured to P4A tolerance class with an extra light preload (Class A), this bearing guarantees minimal vibration and precise shaft positioning, which is critical for applications like machine tool spindles.
- Durable Construction: Both rings and balls are made from high-grade chrome steel, providing excellent wear resistance and long service life under demanding operating conditions.
7204 CD/P4ADGA Bearing Typical Application Areas
- Machine Tool Spindles: High-precision milling, grinding, and turning centers.
- High-Speed Machining Centers: Spindles requiring high rotational accuracy and rigidity.
- Precision Instrumentation: Medical devices, optical scanners, and coordinate measuring machines.
- Robotics: High-accuracy joints and rotary actuators.
- Pumps and Compressors: Applications where high-speed and reliable performance are paramount.
