7004 CE/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7004 CE/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.13 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
2722 lbf
Radial static load rating
1508 lbf
Limiting speed
100 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
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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7004 CE/P4ADBA Bearing Product Overview & Core Advantages
The 7004 CE/P4ADBA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This duplex back-to-back (DB) matched set provides superior stability under combined loads, efficiently handling radial and axial forces in both directions. Manufactured to the exacting P4A tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed spindles and other high-precision machinery. The pre-lubricated design and phenolic cage contribute to reliable, long-term performance.
7004 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix | Technical Meaning |
|---|---|
| CE | Indicates a duplex bearing set with a specific preload and matching. In this context, it signifies the Back-to-Back (DB) arrangement. |
| P4A | Denotes an ultra-high precision tolerance class with enhanced running accuracy requirements, exceeding standard ABEC 7 / ISO P4 levels. |
| DB | Specifies the Duplex Back-to-Back mounting configuration, which provides high moment rigidity and is optimal for withstanding overturning moments. |
7004 CE/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Stability: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that significantly increases resistance to moment loads and shaft deflection, ensuring precise shaft positioning.
- Superior Load Capacity: The 15° contact angle and duplex design enable the bearing to support substantial combined radial and axial loads from both directions simultaneously.
- High-Speed Capability: The lightweight phenolic resin cage reduces centrifugal forces, while the optimized internal geometry allows for a high limiting speed of 100,000 rpm, making it an excellent high-speed bearing.
- Precision Performance: Manufactured to P4A tolerance class with tight dimensional control on the bore diameter, outside diameter, and width, this bearing guarantees smooth, quiet operation with minimal vibration.
- Pre-Lubricated & Ready-to-Use: The bearing comes lubricated from the factory, simplifying installation and ensuring immediate, reliable operation within its specified temperature range.
7004 CE/P4ADBA Bearing Typical Application Areas
This bearing is engineered for high-performance applications where precision and speed are critical. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy rotary axes.
- Medical Equipment: Dental handpieces, centrifuges, and imaging devices.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation instruments.
- High-Frequency Motors & Spindles: Where exceptional running accuracy and low noise are required.
