7004 CEGA/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7004 CEGA/P4A
Basic Information
System of measurement
Metric
Weight
0.064 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
12 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
1667 lbf
Radial static load rating
754 lbf
Limiting speed
121 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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:
$ 77.54
/ each
In Stock
- Fast delivery
- Free shipping on orders over $200
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7004 CEGA/P4A Bearing Product Overview & Core Advantages
The 7004 CEGA/P4A is a single row angular contact ball bearing designed for high-precision applications requiring exceptional rotational accuracy and speed capability. Manufactured to P4A tolerance class, this bearing delivers superior running accuracy and dimensional stability. Its 15° contact angle is optimized to handle significant combined loads (radial and axial), making it an ideal choice for machine tool spindles and other precision machinery where high rigidity and high-speed performance are critical. The bearing comes pre-lubricated and is universally matchable (SU), allowing for precise axial preload adjustment when mounted in pairs.
7004 CEGA/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Indicates a universally matchable bearing design. Two bearings can be mounted together in any combination (face-to-face, back-to-back, or tandem) to achieve the required preload and stiffness. |
| GA | Specifies a light preload (Class A) applied to the bearing. This preload eliminates internal clearance, enhancing rigidity and rotational accuracy for high-speed applications. |
| P4A | Denotes an ABEC 7 / ISO P4 precision class with additional tolerance requirements on width and runout, ensuring extremely high running accuracy. |
7004 CEGA/P4A Bearing Structural Features & Performance Benefits
- High Precision & Rigidity: Manufactured to P4A tolerance class with a phenolic resin cage, this bearing ensures minimal vibration and exceptional running accuracy. The 15° contact angle and light preload (GA) work in concert to provide high system rigidity, critical for applications demanding precise positioning and minimal deflection under load.
- Superior Load Capacity: The optimized internal geometry allows the bearing to support substantial combined radial and axial loads simultaneously, making it suitable for complex loading conditions.
- High-Speed Performance: The lightweight and robust phenolic cage, coupled with the precision-ground chrome steel components, enables stable operation at high rotational speeds, with a limiting speed of 121,000 rpm.
- Universal Matching Capability (SU): The CE designation means bearings can be universally paired to create a matched set, offering flexibility in achieving the exact preload and stiffness required for the application without selective matching.
7004 CEGA/P4A Bearing Typical Application Areas
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling spindles.
- Precision Rotary Systems: High-frequency motors, precision spindles for PCB drilling, and dental handpieces.
- Aerospace & Defense Systems: Gyroscopes, radar equipment, and navigation instruments.
- Industrial Pumps & Compressors: High-speed centrifugal pumps and compressor shafts.
