7018 CB/P4A
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7018 CB/P4A
Basic Information
System of measurement
Metric
Weight
1.25 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
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
19 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:
$ 921.77
/ each
In Stock
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7018 CB/P4A Bearing Product Overview & Core Advantages
The 7018 CB/P4A is a single-row angular contact ball bearing designed for precision applications requiring exceptional rotational accuracy and rigidity. Engineered to P4 (ABEC-7) tolerance class, this bearing is optimized to handle significant combined loads (radial and axial) in one direction. Its preload availability ensures minimal axial and radial play, resulting in superior system stiffness, precise shaft positioning, and reduced noise and vibration during operation, making it ideal for high-reliability machinery.
Model Code Breakdown
| Code Segment | Technical Meaning |
|---|---|
| 7018 | Basic bearing series, indicating a 90 mm bore, 140 mm OD, and 24 mm width. |
| CB | Specific internal design and contact angle of 15°, optimized for matched mounting and specific preload. |
| P4A | Indicates P4 (ABEC-7) tolerance class with specific dimensional and running accuracy requirements. |
7018 CB/P4A Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The single-row angular contact design with a 15° contact angle and available preload provides high axial and radial stiffness, ensuring precise shaft guidance and minimal deflection under load.
- Superior Load Capacity: Engineered to support high combined loads, efficiently managing radial forces and substantial thrust loads in one direction.
- Optimized High-Speed Performance: The lightweight phenolic resin cage ensures stability and reduces centrifugal forces, contributing to a high limiting speed of 19,000 rpm. The bearing is supplied lubricated for immediate operation.
- Premium Materials: Manufactured from chrome steel for rings and balls, offering high fatigue resistance and durability for long service life in demanding conditions.
7018 CB/P4A Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for applications requiring high speed, rigidity, and accuracy, including:
- Machine Tool Spindles
- High-Frequency Motors
- Precision Grinding Spindles
- Industrial Pumps and Compressors
- Aerospace and Defense Systems
