7018 ACE/HCP4BVG275
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7018 ACE/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
25 °
Ball & Washer Dimensions
Ball diameter
11.112 mm
Ball quantity
28
Performance
Temperature range
-30° to 110 °C
Radial dynamic load rating
7605 lbf
Radial static load rating
6750 lbf
Limiting speed
14 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:
$ 922.06
/ each
In Stock
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7018 ACE/HCP4BVG275 Bearing Product Overview & Core Advantages
The 7018 ACE/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 (radial and axial) simultaneously, thanks to its specific 25° contact angle. Manufactured to a P4 (ABEC-7) tolerance class, it guarantees ultra-precise running accuracy. The combination of a phenolic cage and ceramic balls enables superior high-speed performance and reduced rotational mass, making it an ideal solution for machine tool spindles and other high-velocity machinery.
7018 ACE/HCP4BVG275 Bearing Model Code Explained, Specifications & Naming Convention
| Model Segment | Technical Meaning |
|---|---|
| 7018 | Standard bearing series designation, indicating the bearing dimensions (90mm bore, 140mm OD, 24mm width). |
| ACE | Internal design code, typically indicating a specific internal geometry and optimized contact angle for high performance. |
| HC | Denotes the use of Hybrid Ceramic components (ceramic balls with steel rings). |
| P4 | Specifies the tolerance class (P4 / ABEC-7), signifying very high precision for running accuracy and dimensional stability. |
| BVG275 | Indicates a specific preload level and internal clearance group, optimized for high rigidity and precise rotational performance. |
7018 ACE/HCP4BVG275 Bearing Structural Features & Performance Benefits
- High Rigidity and Precision: The P4 tolerance class and availability of preload ensure minimal runout and high system stiffness, which is critical for applications like machining centers.
- Superior High-Speed Capability: The lightweight phenolic cage and low-density ceramic balls significantly reduce centrifugal forces, allowing for a high limiting speed of 14,000 rpm.
- Enhanced Durability and Temperature Resistance: Ceramic balls are harder and more wear-resistant than steel, and the phenolic cage can withstand higher operating temperatures, contributing to a longer service life.
- Optimized Load Capacity: With a 25° contact angle, this bearing is designed to handle significant axial loads in one direction in addition to radial loads, providing excellent combined load support.
7018 ACE/HCP4BVG275 Bearing Typical Application Areas
This precision angular contact bearing is ideally suited for high-performance machinery where speed, accuracy, and rigidity are paramount. Key application areas include:
- Machine Tool Spindles: For CNC machining centers, lathes, and grinders.
- High-Speed Motors and Spindles: In applications requiring extreme rotational velocities.
- Precision Robotics: For articulated arms and high-accuracy positioning systems.
- Aerospace and Defense Systems: In gyroscopes, navigation systems, and other critical components.
