S7018 CD/P4A
Sealed Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
S7018 CD/P4A
Basic Information
System of measurement
Metric
Weight
1.17 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
15.875 mm
Ball quantity
20
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
17842 lbf
Radial static load rating
17212 lbf
Limiting speed
9 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:
$ 1106.36
/ each
In Stock
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S7018 CD/P4A Bearing Product Overview & Core Advantages
The S7018 CD/P4A is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. As a single-row bearing with a 15° contact angle, it is optimized to handle combined loads, carrying significant radial loads and one-directional axial loads simultaneously. Manufactured to P4 (ABEC-7) tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed spindles and other precision machinery. The bearing comes preloaded and lubricated from the factory, ensuring immediate, reliable performance and simplified installation.
S7018 CD/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7018 | Basic bearing series designation, indicating a 90mm bore, 140mm OD, and 24mm width. |
| C | Specifies a 15° contact angle. |
| D | Indicates a high rigid phenolic resin cage. |
| P4A | Denotes a P4 (ABEC-7) tolerance class and that the bearing is supplied preloaded for immediate high-precision operation. |
S7018 CD/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The combination of a phenolic resin cage and P4 precision manufacturing ensures exceptional dimensional stability and minimal deformation under load, providing superior running accuracy for spindle applications.
- Optimized Load Capacity: The 15° contact angle is engineered to efficiently support combined radial and axial loads, with a high dynamic load rating of 17,842 lbf.
- Superior High-Speed Performance: The lightweight and robust phenolic cage, combined with optimized internal geometry, allows for a high limiting speed of 9,000 rpm, reducing centrifugal forces and heat generation.
- Ready-to-Install & Reliable: The bearing is supplied pre-lubricated and with a factory-applied preload, eliminating the need for initial setup and ensuring consistent, long-term performance within its specified temperature range of -30° to 110°C.
S7018 CD/P4A Bearing Typical Application Areas
This bearing is ideally suited for high-performance applications where speed, precision, and rigidity are critical. Key sectors include:
- Machine Tool Spindles: CNC machining centers, grinding spindles, and high-speed milling heads.
- Precision Drives: High-frequency motors, servo motors, and robotics.
- Aerospace & Defense: Gyroscopes, radar systems, and navigation equipment.
- Medical Equipment: Dental handpieces, high-speed centrifuges, and imaging devices.
