7018 CE/HCP4BVG275
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
7018 CE/HCP4BVG275
Basic Information
System of measurement
Metric
Weight
1.11 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
15.5 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:
$ 922.17
/ each
In Stock
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7018 CE/HCP4BVG275 Bearing Product Overview & Core Advantages
The 7018 CE/HCP4BVG275 is a high-precision, single-row angular contact ball bearing engineered for demanding applications requiring exceptional accuracy and performance. Its primary advantage lies in its ability to support combined loads—simultaneously handling significant radial loads and axial loads in one direction. Manufactured to a P4 (ABEC-7) tolerance class, this bearing guarantees ultra-precise running accuracy. The combination of a ceramic ball material and a phenolic cage enables superior high-speed performance, making it an ideal solution for machine tool spindles and other high-velocity machinery where rigidity and thermal stability are critical.
7018 CE/HCP4BVG275 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 7018 | Standard bearing series designation, indicating the basic size: 90mm bore, 140mm OD, 24mm width. |
| CE | Indicates a 15° contact angle, optimized for high-speed operation and providing a balance between radial and axial load capacity. |
| HC | Signifies the use of Hybrid Ceramic balls (ceramic balls with steel rings), reducing friction, heat generation, and enabling higher limiting speeds. |
| P4 | Denotes the tolerance class equivalent to ABEC-7, ensuring extremely tight dimensional and running accuracy for precision applications. |
| BVG | Indicates a specific internal design and cage type. The VG suffix typically refers to a phenolic resin cage, which is lightweight and ideal for high-speed operation. |
| 275 | Likely refers to a specific preload rating or internal clearance group, ensuring optimal stiffness and running accuracy when mounted. |
7018 CE/HCP4BVG275 Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Construction: The combination of chrome steel rings and silicon nitride (Si3N4) ceramic balls significantly reduces centrifugal forces, friction, and operating temperature. This directly contributes to a higher limiting speed (15,500 rpm) and extended service life, especially in high-speed applications.
- Phenolic Resin Cage (VG): This lightweight and robust cage material offers excellent dimensional stability and low friction at high rotational speeds, further enhancing the bearing's high-speed capability and reliability.
- Precision P4 Tolerance: Manufactured to the strictest precision bearing standards, this bearing ensures minimal runout and vibration, which is critical for applications demanding high rotational accuracy and surface finish quality.
- Optimized Load Capacity: With a 15° contact angle and robust internal geometry, this bearing delivers a high dynamic load rating of 8055 lbf, providing reliable performance under demanding combined radial and axial loads.
- Preload Availability: The availability of preload allows for precise control over bearing rigidity and system deflection, resulting in improved system natural frequency and positioning accuracy.
7018 CE/HCP4BVG275 Bearing Typical Application Areas
This bearing is specifically designed for high-performance machinery where speed, precision, and rigidity are non-negotiable. Key application areas include:
- Machine Tool Spindles: High-speed machining centers, grinding spindles, and milling spindles.
- Precision Instrumentation: High-speed measuring devices and analytical equipment.
- High-Frequency Motors and Spindles: Motors for PCB drilling and other high-RPM applications.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other critical rotating assemblies.
