7018 CD/HCP4A
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7018 CD/HCP4A
Basic Information
System of measurement
Metric
Weight
1.01 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
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
18 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:
$ 921.94
/ each
In Stock
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7018 CD/HCP4A Bearing Product Overview & Core Advantages
The 7018 CD/HCP4A is a single-row angular contact ball bearing engineered for applications demanding exceptional precision and performance. This metric-series bearing features a 15° contact angle and is supplied with a preload, delivering superior running accuracy and high rigidity. Its open design, combined with a phenolic cage and ceramic balls, is optimized for high-speed operation up to 18,000 rpm, making it ideal for machine tool spindles and other precision rotary equipment where minimal deflection under combined loads is critical.
7018 CD/HCP4A Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Benefit |
|---|---|---|
| CD | High contact angle (15°) and preload | Provides high rigidity and precise shaft positioning. |
| HCP4A | Hybrid Ceramic with P4 (ABEC-7) tolerance | Enables higher speeds, reduced heat generation, and exceptional running accuracy. |
7018 CD/HCP4A Bearing Structural Features & Performance Benefits
- High Rigidity & Axial Load Capacity: The 15° contact angle and applied preload significantly increase system stiffness, enabling the bearing to effectively support combined radial and axial loads with minimal deflection.
- Superior High-Speed Performance: The lightweight phenolic resin cage and ceramic balls (hybrid construction) reduce centrifugal forces and friction, allowing for a high limiting speed of 18,000 rpm. This design also mitigates heat buildup.
- Precision & Longevity: Manufactured to P4 (ABEC-7) tolerance class, this bearing ensures exceptional running accuracy. The open seal type allows for optimal lubrication management, catering to specific high-speed application needs.
- Optimized Material Selection: The combination of chrome steel rings and ceramic balls offers increased durability, lower density, and electrical insulation properties, enhancing performance in demanding environments.
7018 CD/HCP4A Bearing Typical Application Areas
This precision angular contact bearing is specifically designed for high-performance applications, including:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Rotary Systems: High-frequency spindles and robotics.
- Medical Equipment: Dental handpieces and imaging device rotors.
- Aerospace & Defense Systems: Gyroscopes and navigation instruments.
