S7018 CB/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7018 CB/HCP4A
Basic Information
System of measurement
Metric
Weight
1.18 kg
Tolerance class
P4 (ABEC-7)
Seal type
Sealed
For load direction
Angular Contact
Main Dimensions
Bore diameter
90 mm
Bore diameter tolerance
-0.008mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.009mm to 0
Width
24 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
10.319 mm
Ball quantity
25
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
6548 lbf
Radial static load rating
5625 lbf
Limiting speed
15 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:
$ 1106.38
/ each
In Stock
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S7018 CB/HCP4A Bearing Product Overview & Core Advantages
The S7018 CB/HCP4A is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and high-speed capability. As a single-row bearing with a 15° contact angle, it is engineered to support high radial loads combined with substantial axial loads in one direction. Its key advantages stem from its P4 (ABEC-7) tolerance class for superior running accuracy, preload availability for enhanced system rigidity, and the use of ceramic balls which significantly reduce friction and heat generation, enabling higher limiting speeds and longer service life.
S7018 CB/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7018 | Basic bearing series designation, indicating a high-precision angular contact design. |
| CB | Specific internal clearance and preload designation, optimized for high rigidity and precise operation. |
| HC | Indicates the use of Hybrid Ceramic balls, providing superior high-speed performance and durability. |
| P4A | Specifies the P4 (ABEC-7) tolerance class, ensuring extremely tight dimensional and running accuracy. |
S7018 CB/HCP4A Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and ceramic balls reduces centrifugal forces, minimizes friction, and allows for a limiting speed of 15,000 rpm. This construction also offers improved resistance to electrical erosion and can operate with less lubrication.
- Phenolic Resin Cage: The lightweight and robust phenolic cage ensures stable ball guidance at high speeds, contributing to smooth operation and reduced vibration.
- Precision & Rigidity: The 15° contact angle and availability of preload allow for precise axial positioning and high system stiffness, which is critical for applications requiring minimal deflection under load.
- High Load Capacity: With a dynamic load rating of 6548 lbf and a static load rating of 5625 lbf, this bearing is capable of handling significant combined radial and axial loads.
- Sealed & Lubricated: The bearing comes sealed and pre-lubricated, protecting against contamination and providing long-term, maintenance-free operation within its specified temperature range.
S7018 CB/HCP4A Bearing Typical Application Areas
This high-performance bearing is ideally suited for:
- High-Speed Machine Tool Spindles (e.g., milling, grinding)
- Precision Robotics and Automation Arms
- High-Frequency Motors and Spindles
- Medical Equipment (e.g., dental handpieces, centrifuges)
- Aerospace Instrumentation and Auxiliary Systems
