7204 CD/P4ADGB
7200 & 7300 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7204 CD/P4ADGB
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
Light / Class B
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/P4ADGB Bearing Product Overview & Core Advantages
The 7204 CD/P4ADGB 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 paired with an identical bearing to form a rigid, preloaded set capable of withstanding combined loads (radial and axial). Its P4A tolerance class ensures superior dimensional and running accuracy, making it ideal for high-precision spindles and other critical machinery where high rigidity and reliability are paramount.
7204 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7204 | Basic bearing series and size designation (20mm bore, 47mm OD). |
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial loads. |
| D | Indicates the bearing is part of a Universal Matchable (SU) pair. Two such bearings can be mounted together in various configurations (back-to-back, face-to-face, or tandem). |
| /P4A | Denotes a high-precision tolerance class with enhanced dimensional and running accuracy, exceeding standard ABEC 7/ISO P4 levels. |
| DGB | Signifies a Light preload (Class B). This preload eliminates internal clearance, increasing system stiffness and improving rotational accuracy. |
7204 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The Universal Matchable (SU) design allows two bearings to be precisely matched. When mounted in pairs (typically back-to-back), they create a highly rigid bearing system that effectively supports combined radial and axial loads from both directions, as well as moment loads.
- Superior High-Speed Performance: The phenolic (resin) cage is lightweight and possesses excellent sliding properties, reducing centrifugal forces and friction. This, combined with the optimized 15° contact angle, enables the bearing to achieve a high limiting speed of 100,500 rpm.
- Precision Engineering: Manufactured to P4A tolerance class, this bearing guarantees minimal runout and precise dimensional stability, which is critical for applications requiring ultra-high rotational accuracy.
- Optimized Internal Geometry: With 11 precision-ground chrome steel balls of 7.938 mm diameter, the bearing is designed for smooth operation and long service life under demanding conditions.
7204 CD/P4ADGB Bearing Typical Application Areas
This bearing is specifically engineered for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Drives: High-frequency motors and spindles.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Robotics: High-accuracy robotic arm joints and gears.
- Aerospace & Defense: Gyroscopes, radar systems, and other precision instrumentation.
