S7004 CE/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7004 CE/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
0.12 kg
Tolerance class
P4A
Seal type
Sealed
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
Grease
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
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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S7004 CE/HCP4ADBA Bearing Product Overview & Core Advantages
The S7004 CE/HCP4ADBA is a precision angular contact ball bearing designed for the most demanding high-performance applications. This matched duplex set in a Back-to-Back (DB) arrangement is engineered to provide exceptional running accuracy and system rigidity. Featuring a ceramic ball construction and a P4A super-precision tolerance, it is optimized for high-speed operation, offering superior dynamic load capacity and thermal stability. Its sealed and pre-lubricated design ensures long-term, maintenance-free performance in critical machinery.
Model Code Breakdown
| Suffix Code | Technical Meaning |
|---|---|
| S7004 | Standard series designation for a 20mm bore, 42mm OD angular contact ball bearing. |
| CE | Indicates Hybrid Ceramic construction, featuring ceramic balls for reduced friction, lower heat generation, and higher speed capability. |
| HC | Refers to the Phenolic (Polyamide) Cage, which is lightweight and ideal for high-speed applications, offering excellent guidance and low friction. |
| P4A | Denotes a super-precision tolerance class, providing extremely tight dimensional and running accuracy for applications requiring minimal vibration and high positional precision. |
| DB | Specifies the Duplex Back-to-Back matched arrangement, which provides high moment rigidity and can accommodate combined radial and axial loads from both directions. |
| A | Signifies an Extra Light Preload, which minimizes friction and heat build-up while ensuring precise shaft positioning and system stability. |
S7004 CE/HCP4ADBA Bearing Structural Features & Performance Benefits
- Superior Rigidity and Load Capacity: The duplex Back-to-Back (DB) arrangement creates a highly rigid bearing system capable of withstanding significant combined loads (radial and axial) and moment loads, making it ideal for precision spindles.
- Enhanced High-Speed Performance: The combination of ceramic balls (lower density, reduced centrifugal force) and a lightweight phenolic cage allows for a very high limiting speed of 100,000 rpm. This design minimizes friction, heat generation, and wear.
- Exceptional Precision and Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is critical for achieving high surface finishes and machining accuracy.
- Sealed and Pre-Lubricated Design: The integral seals protect against contamination and retain the high-performance grease, enabling maintenance-free operation throughout a wide temperature range of -30°C to 110°C.
S7004 CE/HCP4ADBA Bearing Typical Application Areas
The S7004 CE/HCP4ADBA is engineered for high-end applications where speed, precision, and reliability are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Robotics: Arm joints and high-accuracy positioning systems.
- Aerospace & Defense: Gyroscopes, radar systems, and auxiliary power units (APUs).
- Semiconductor Manufacturing: Wafer handling robots and precision stages.
- High-Frequency Motors and Spindles: PCB drilling spindles and dental handpieces.
