7018 CE/P4AQBCA
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7018 CE/P4AQBCA
Basic Information
System of measurement
Metric
Weight
4.81 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
96 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
21510 lbf
Radial static load rating
28575 lbf
Limiting speed
15 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Quadruplex Back-to-Back (QBC)
Number of bearings in matched set
4
Universal matching bearing
No (Standard)
Preload
Extra light / Class A
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
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/P4AQBCA Bearing Product Overview & Core Advantages
The 7018 CE/P4AQBCA is a precision quadruplex matched set of Angular Contact Ball Bearings arranged in a Back-to-Back (QBC) configuration. Engineered to the exacting P4A tolerance class, this bearing group is designed for applications demanding the highest levels of rotational accuracy, system rigidity, and operational stability. Its core advantage lies in its ability to support combined loads (radial and axial) simultaneously while providing exceptional running accuracy and high rigidity, making it ideal for ultra-precise, high-performance machinery.
7018 CE/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning | Advantage |
|---|---|---|
| C | 15° Contact Angle | Optimized for high-speed operation with excellent axial load capacity. |
| E | Optimized internal design | Enhanced load rating and speed capability. |
| P4A | High Precision Tolerance Class | Superior dimensional and running accuracy for applications requiring minimal vibration and precise shaft positioning. |
| QBC | Quadruplex Back-to-Back arrangement | Provides maximum system rigidity and moment load capacity. The back-to-back arrangement creates a wide effective spread for superior stability. |
7018 CE/P4AQBCA Bearing Structural Features & Performance Benefits
- High Rigidity & Moment Load Capacity: The Quadruplex Back-to-Back (QBC) matched arrangement significantly increases the bearing system's rigidity, enabling it to withstand substantial moment loads and preventing shaft misalignment under heavy operating conditions.
- Superior Running Accuracy: Manufactured to P4A tolerance class standards, this bearing ensures extremely tight dimensional control, resulting in smooth, quiet operation with minimal vibration, which is critical for precision machinery.
- Optimized High-Speed Performance: The phenolic cage is lightweight and possesses excellent sliding properties, reducing centrifugal forces and friction at high speeds. Combined with the 15° contact angle and optimized internal geometry, it supports a high limiting speed.
- High Load Capacity: The Extra light preload (Class A) ensures precise internal clearance control, while the robust construction with chrome steel components provides high dynamic and static load ratings for demanding applications.
7018 CE/P4AQBCA Bearing Typical Application Areas
- High-Precision Machine Tool Spindles (e.g., grinding, milling, and turning centers)
- High-Speed Spindles for PCB drilling and routing
- Precision gearboxes and transmission systems
- Industrial pumps and compressors requiring high rigidity
- Advanced robotics and automation equipment
