S7004 CE/HCP4ADT
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7004 CE/HCP4ADT
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 Tandem (DT)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Available
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
Price available upon request.
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S7004 CE/HCP4ADT Bearing Product Overview & Core Advantages
The S7004 CE/HCP4ADT is a super-precision angular contact ball bearing designed for the most demanding high-speed and high-rigidity applications. As a duplex tandem (DT) matched set, it is engineered to handle significant axial loads in one direction, making it ideal for precision spindles. Its core advantages include exceptional rotational accuracy (P4A tolerance), high-speed capability enabled by a phenolic cage and ceramic balls, and reliable, long-term performance due to its sealed and pre-lubricated design.
S7004 CE/HCP4ADT Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7004 | Super-precision bearing series with 20mm bore diameter. |
| CE | Indicates the use of ceramic (Si3N4) balls, which reduce centrifugal forces, lower operating temperature, and enable higher limiting speeds. |
| HC | Refers to a phenolic (Polyamide) cage, which is lightweight and ideal for high-speed operation with excellent sliding properties. |
| P4A | Denotes an ABEC 7 / ISO P4 tolerance class with additional running accuracy requirements for superior performance. |
| DT | Signifies a Duplex Tandem preload arrangement. Two bearings are mounted together to increase axial load capacity and system rigidity. |
S7004 CE/HCP4ADT Bearing Structural Features & Performance Benefits
- High Rigidity & Axial Load Capacity: The duplex tandem (DT) arrangement combines two bearings to provide exceptional stiffness and a high capacity for unidirectional axial loads, which is critical for minimizing deflection in precision spindles.
- Superior High-Speed Performance: The combination of a lightweight phenolic cage (HC) and low-density ceramic balls (CE) significantly reduces centrifugal forces and friction, enabling a high limiting speed of 100,000 rpm.
- Precision & Accuracy: Manufactured to P4A tolerance class, this bearing ensures minimal runout and vibration, which is essential for achieving high surface finishes and machining accuracy.
- Sealed & Pre-lubricated Design: The bearing comes sealed and pre-lubricated with grease, offering protection from contaminants and providing maintenance-free operation throughout its service life.
S7004 CE/HCP4ADT Bearing Typical Application Areas
This high-performance bearing is specifically designed for advanced machinery requiring utmost precision and speed, including:
- High-Frequency CNC Spindles for milling, grinding, and drilling
- Precision Machine Tool Main Shafts
- High-speed Robotic Drives
- Aerospace & Defense instrumentation and control systems
