7004 CD/P4ADGB
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7004 CD/P4ADGB
Basic Information
System of measurement
Metric
Weight
0.14 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
42 mm
Outside diameter tolerance
-0.004mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
12
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
3150 lbf
Radial static load rating
1912 lbf
Limiting speed
121 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
In Stock
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7004 CD/P4ADGB Bearing Product Overview & Core Advantages
The 7004 CD/P4ADGB is a precision angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. Operating as a universal matchable (SU) bearing, it can be mounted in tandem, face-to-face, or back-to-back arrangements to accommodate complex load scenarios. Its defining characteristics include a P4A tolerance class for superior running accuracy, a light preload (Class B) for reduced noise and vibration, and a 15° contact angle optimized for handling combined radial and axial loads simultaneously. This makes it an ideal solution for high-speed, high-precision spindles and machinery.
7004 CD/P4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a 15° contact angle and specific internal design for high-precision applications. |
| P4A | Denotes an ultra-precision tolerance class with enhanced dimensional and running accuracy beyond ABEC 7. |
| DGB | Signifies a universal matchable (SU) bearing. Two bearings can be paired in any configuration (tandem, back-to-back, face-to-face) to achieve the required stiffness and load capacity. |
7004 CD/P4ADGB Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: Manufactured to P4A tolerance standards with a light preload, this bearing ensures minimal runout and exceptional rotational accuracy, which is critical for machine tool spindles.
- Superior Load Capacity: The 15° contact angle is engineered to efficiently support combined loads, making it capable of handling significant radial forces and axial thrust in both directions when properly arranged.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, lowers friction, and contributes to a high limiting speed of 121,000 rpm. The open design allows for efficient lubrication management.
- Universal Matching Capability (SU): The DGB suffix confirms that bearings are universal matchable. This provides design engineers with maximum flexibility to create bearing sets that deliver precise preload and stiffness characteristics for their specific application.
7004 CD/P4ADGB Bearing Typical Application Areas
This precision angular contact ball bearing is ideally suited for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- High-Frequency Motors and Spindles: Where low vibration and high running accuracy are paramount.
- Medical and Laboratory Equipment: Centrifuges and precision instrumentation.
- Aerospace Actuation Systems: Control surface mechanisms and auxiliary drives.
