7011 CE/P4AQBCA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7011 CE/P4AQBCA
Basic Information
System of measurement
Metric
Weight
1.57 kg
Tolerance class
P4A
Seal type
Open
For load direction
Angular Contact
Main Dimensions
Bore diameter
55 mm
Bore diameter tolerance
-0.004mm to 0
Outside diameter
90 mm
Outside diameter tolerance
-0.004mm to 0
Width
72 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
7.938 mm
Ball quantity
24
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
9945 lbf
Radial static load rating
11025 lbf
Limiting speed
34 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.
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7011 CE/P4AQBCA Bearing Product Overview & Core Advantages
The 7011 CE/P4AQBCA is a precision angular contact ball bearing designed for applications demanding exceptional rotational accuracy and rigidity. This quadruplex back-to-back matched set delivers superior performance in handling combined loads (radial and axial) simultaneously. Manufactured to the stringent P4A tolerance class, it ensures minimal runout and vibration, making it ideal for high-speed, high-precision machinery. The extra light preload (Class A) minimizes deflection under operational stresses, contributing to its high rigidity and extended service life.
7011 CE/P4AQBCA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CE | Indicates a 15° contact angle, optimized for high-speed applications requiring good axial load capacity. |
| P4A | Denotes a high-precision tolerance class with enhanced dimensional and running accuracy, superior to ABEC 7. |
| QBC | Specifies a Quadruplex Back-to-Back matched arrangement. Four bearings are mounted as two back-to-back pairs, providing maximum rigidity against moment loads. |
| A | Signifies an Extra Light Preload (Class A), which reduces deflection and improves system stability without generating excessive heat. |
7011 CE/P4AQBCA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The quadruplex back-to-back (QBC) arrangement creates a highly rigid bearing system capable of withstanding significant combined radial and axial loads, as well as moment loads. This configuration is critical for maintaining precision under heavy operating conditions.
- Precision & High-Speed Performance: The P4A tolerance class and 15° contact angle are engineered for smooth, quiet operation at high rotational speeds, with a limiting speed of 34,000 rpm. The phenolic cage contributes to lower friction and is suitable for high-speed applications.
- Optimized Material & Design: Constructed from chrome steel for both rings and balls, the bearing offers high durability and fatigue resistance. The open design allows for customized lubrication schemes to further enhance performance and service life in specific operating environments.
7011 CE/P4AQBCA Bearing Typical Application Areas
This bearing is specifically engineered for the most demanding industrial applications, including:
- Machine Tool Spindles: For high-precision milling, grinding, and turning centers where rigidity and accuracy are paramount.
- High-Frequency Spindles: Used in PCB drilling and other applications requiring extreme rotational speeds.
- Precision Gearboxes: In robotics and aerospace systems where backlash and deflection must be minimized.
- Medical Equipment: For high-speed centrifuges and imaging device rotors.
