S7005 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7005 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
0.07 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
25 mm
Bore diameter tolerance
-0.005mm to 0
Outside diameter
47 mm
Outside diameter tolerance
-0.006mm to 0
Width
12 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.35 mm
Ball quantity
14
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
2151 lbf
Radial static load rating
1170 lbf
Limiting speed
43 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
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
Price:
$ 146.76
/ each
In Stock
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S7005 CD/HCP4A Bearing Product Overview & Core Advantages
The S7005 CD/HCP4A is a high-precision, single-row angular contact ball bearing engineered for applications demanding exceptional accuracy and high-speed performance. Its defining feature is the ability to support combined loads, simultaneously carrying significant radial loads and axial loads in one direction. Manufactured to P4 (ABEC-7) tolerance class and featuring a ceramic ball and phenolic cage construction, this bearing is optimized for superior rigidity, low friction, and extended service life in demanding operational environments.
S7005 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7005 | Basic bearing designation, indicating a metric 25mm bore, 47mm OD, and 12mm width. |
| C | Specifies a 15° contact angle, balancing axial and radial load capacity. |
| D | Indicates a high preload is applied, enhancing system rigidity and rotational accuracy. |
| HC | Refers to the Hybrid Ceramic construction, featuring steel rings and ceramic balls for reduced weight, lower friction, and higher speed capability. |
| P4 | Denotes the ultra-precision tolerance class (equivalent to ABEC-7), ensuring minimal runout and vibration. |
| Sealed / Lubricated | The bearing is sealed and comes pre-lubricated, protecting against contamination and providing maintenance-free operation. |
S7005 CD/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls significantly reduces centrifugal forces, lowers operating temperature, and enables a higher limiting speed (43,000 rpm). This construction also offers superior resistance to electrical erosion and operates effectively with minimal lubrication.
- High Rigidity & Precision: The application of a preload eliminates internal clearance, resulting in greater shaft positioning accuracy and stiffness, which is critical for high-precision machining and instrumentation.
- Optimized High-Speed Performance: The lightweight phenolic cage is designed for high-speed stability and low friction, complementing the benefits of the ceramic balls to achieve the rated limiting speed.
- Robust Load Capacity: The 15° contact angle is engineered to handle substantial combined loads, making it suitable for applications with complex force requirements.
- Sealed and Ready-to-Use: As a sealed and pre-lubricated unit, it is protected from contaminants and is designed for long-term, maintenance-free operation within its specified temperature range.
S7005 CD/HCP4A Bearing Typical Application Areas
This high-performance precision bearing is ideally suited for:
- High-Speed Machine Tool Spindles: For CNC milling, grinding, and drilling centers requiring high rigidity and rotational accuracy.
- Precision Instrumentation: In medical devices, optical scanners, and coordinate measuring machines.
- High-Frequency Motors and Spindles: Where low friction, high speed, and long life are paramount.
- Aerospace & Defense Systems: In gyroscopes, navigation systems, and other critical components.
