S7018 CB/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7018 CB/P4A
Basic Information
System of measurement
Metric
Weight
1.25 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
12 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Single
Preload
Available
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:
$ 1106.17
/ each
In Stock
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S7018 CB/P4A Bearing Product Overview & Core Advantages
The S7018 CB/P4A is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. As a single-row bearing with P4 (ABEC-7) tolerance class, it delivers superior running precision. Its key advantage lies in its ability to accommodate combined radial and axial loads simultaneously, making it ideal for high-speed spindles and precision machinery. The bearing comes preloaded and lubricated from the factory, ensuring immediate installation and optimal performance from the outset.
S7018 CB/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Performance Benefit |
|---|---|---|
| C | 15° Contact Angle | Optimized for high-speed operation and moderate axial load capacity. |
| B | Preload Class | Provides increased rigidity and reduced runout for enhanced precision. |
| P4A | Tolerance Class (ABEC-7) | Guarantees extremely tight dimensional and running accuracy for demanding applications. |
S7018 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row design with a 15° contact angle and factory-applied preload ensures maximum system stiffness and minimal deflection under load, which is critical for machining accuracy.
- Superior High-Speed Performance: The lightweight phenolic resin cage minimizes centrifugal forces, reduces friction, and contributes to the high limiting speed of 12,000 rpm. This makes it an excellent high-speed bearing.
- Optimized Load Capacity: Engineered to handle significant combined loads (dynamic radial load rating of 6548 lbf), it reliably supports both radial forces and thrust loads in one direction.
- Sealed & Lubricated for Life: As a sealed bearing pre-filled with high-performance grease, it is protected from contamination and is maintenance-free, ensuring long-term reliability within its specified temperature range.
S7018 CB/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where precision and speed are paramount. Key industries and equipment include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling, engraving machines, and high-frequency motors.
- Medical Equipment: Dental handpieces and laboratory centrifuges.
- Robotics: High-accuracy joints and actuators.
