7018 CE/HCP4ADGB
Hybrid Ceramic Super Precision Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7018 CE/HCP4ADGB
Basic Information
System of measurement
Metric
Weight
2.22 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
90 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
140 mm
Outside diameter tolerance
-0.004mm to 0
Width
48 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°C to 110 °C
Radial dynamic load rating
13162 lbf
Radial static load rating
14400 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Universal Matchable (SU)
Number of bearings in matched set
2
Universal matching bearing
Universal Matchable (SU)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
Price available upon request.
Our sales team will respond within 24 hours with a competitive quote tailored to your requirements.
REQUEST A QUOTE
- Fast delivery
- Enjoy discounts on bulk purchases
- Secure Payment
- Fast Global Shipping
7018 CE/HCP4ADGB Bearing Product Overview & Core Advantages
The 7018 CE/HCP4ADGB is a high-precision angular contact ball bearing designed for demanding applications requiring exceptional accuracy and performance. Engineered as a universally matchable (SU) pair, this bearing excels at handling combined loads (radial and axial) simultaneously. Its defining features include a light preload (Class B), a P4A super-precision tolerance class, and a hybrid ceramic ball design, making it ideal for high-speed and high-rigidity spindle configurations where thermal stability and minimal runout are critical.
7018 CE/HCP4ADGB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7018 | Basic bearing series, defining the standard dimensions: 90mm bore, 140mm OD, 48mm width. |
| C | Specifies a 15° contact angle, optimized for high-speed operation and moderate axial load capacity. |
| E | Indicates an optimized internal design, often related to improved load distribution and performance. |
| HC | Signifies a Hybrid Ceramic construction, featuring ceramic (silicon nitride) balls for reduced weight, lower friction, and higher speed capability. |
| P4A | Denotes an ABEC 7 / ISO P4A super-precision tolerance class, ensuring extremely tight dimensional and running accuracy for the most demanding applications. |
| DGB | Specifies a Universal Matchable (SU) arrangement. Two bearings supplied as a pre-matched set ("DB" or "DF" configuration) for simplified installation and optimal preload control. |
7018 CE/HCP4ADGB Bearing Structural Features & Performance Benefits
- Hybrid Ceramic Design: The use of ceramic balls with a chrome steel ring significantly reduces centrifugal forces, enabling higher limiting speeds (15,000 rpm). This combination also offers superior resistance to wear and operates effectively across a wide temperature range (-30°C to 110°C).
- Phenolic Resin Cage: The lightweight and robust phenolic cage provides excellent guidance for the ceramic balls, contributing to smooth operation at high speeds and offering good dimensional stability.
- Super-Precision & Preload: Manufactured to P4A tolerance standards and supplied with a light preload (Class B), this bearing delivers exceptional running accuracy, high system rigidity, and minimal vibration, which is crucial for precision machining.
- Universal Matchability (SU): The DGB suffix indicates the bearings are universally matchable. This allows for flexible mounting in back-to-back (DB) or face-to-face (DF) arrangements without a loss in preload performance, simplifying inventory and assembly.
7018 CE/HCP4ADGB Bearing Typical Application Areas
The 7018 CE/HCP4ADGB is engineered for high-performance machinery where precision, speed, and reliability are paramount. Key application areas include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Spindles: PCB drilling and routing machines.
- High-Frequency Motors: Spindles for electric motors operating at very high RPMs.
- Aerospace & Defense Systems: Gyroscopes, radar systems, and other precision instrumentation.
