7018 CE/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7018 CE/P4A
Basic Information
System of measurement
Metric
Weight
1.2 kg
Tolerance class
P4 (ABEC-7)
Seal type
Open
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
11.112 mm
Ball quantity
28
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
8055 lbf
Radial static load rating
7200 lbf
Limiting speed
21 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:
$ 921.46
/ each
In Stock
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7018 CE/P4A Bearing Product Overview & Core Advantages
The 7018 CE/P4A is a single-row angular contact ball bearing engineered for high-precision applications requiring exceptional rotational accuracy and rigidity. Manufactured to P4 (ABEC-7) tolerance class, it delivers superior running precision. Its key advantage lies in its ability to accommodate combined loads (radial and axial) simultaneously, making it ideal for machine tool spindles and other high-performance machinery. The phenolic cage and optimized internal geometry contribute to its high-speed capabilities and smooth operation.
7018 CE/P4A Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7018 | Basic bearing series; 90 mm bore, 140 mm OD, 24 mm width. |
| C | 15° contact angle, optimized for high axial load capacity. |
| E | Optimized internal design for higher load ratings. |
| P4A | P4 (ABEC-7) tolerance class with specific running accuracy requirements. |
7018 CE/P4A Bearing Structural Features & Performance Benefits
- High Rigidity & Precision: The single-row design with a 15° contact angle and P4 precision ensures high system rigidity and minimal runout, critical for machining accuracy.
- Superior Load Capacity: Engineered to handle significant combined radial and axial loads, with a dynamic load rating of 8055 lbf and static load rating of 7200 lbf.
- High-Speed Performance: The lightweight phenolic resin cage reduces centrifugal forces, enabling a high limiting speed of 21,000 rpm. The open design facilitates efficient lubrication and cooling.
- Optimized Internal Geometry: Features 28 precision balls of 11.112 mm diameter, ensuring smooth operation and extended service life under demanding conditions.
7018 CE/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Where high rotational accuracy and load capacity are paramount.
- High-Frequency Motors and Spindles: Applications requiring low vibration and high-speed operation.
- Medical Equipment: Centrifuges and high-speed scanners.
- Aerospace Actuation Systems: Control surface actuators and auxiliary power units.
