7011 CE/P4ADBA
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7011 CE/P4ADBA
Basic Information
System of measurement
Metric
Weight
0.78 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
36 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
6210 lbf
Radial static load rating
5512 lbf
Limiting speed
39 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Back-to-Back (DB)
Number of bearings in matched set
2
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
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7011 CE/P4ADBA Bearing Product Overview & Core Advantages
The 7011 CE/P4ADBA is a duplex back-to-back (DB) matched pair of precision angular contact ball bearings, manufactured to the exacting P4A tolerance class. This configuration is engineered to provide exceptional system rigidity and high running accuracy, making it ideally suited for applications requiring superior rotational precision and the ability to withstand combined radial and axial loads. The extra light preload (Class A) ensures minimal starting and running torque while optimizing positional accuracy.
7011 CE/P4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| 7011 | Basic bearing series and size designation (55mm bore, 90mm OD). |
| C | Designates a 15° contact angle. |
| E | Indicates a high-capacity internal design with optimized ball size and quantity. |
| P4A | Specifies the ultra-precision tolerance class, exceeding ABEC 7 standards for enhanced running accuracy. |
| DB | Denotes the bearings are supplied as a Duplex Back-to-Back matched set. |
| A | Specifies the preload level, in this case, Extra Light (Class A). |
7011 CE/P4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity & Load Capacity: The duplex back-to-back (DB) arrangement creates a wide, rigid support system that effectively resists overturning moments and can accommodate combined radial and axial loads from both directions.
- Precision Performance: Manufactured to P4A tolerance class with a 15° contact angle, this set delivers extremely high running accuracy and smooth operation, essential for precision machinery.
- Optimized Internal Design: The "E" designation signifies a design with a larger ball diameter (7.938 mm) and increased ball quantity (24), resulting in a higher dynamic and static load rating.
- High-Speed Capability: The lightweight phenolic cage minimizes centrifugal forces, contributing to a high limiting speed of 39,000 rpm. The bearings are pre-lubricated for immediate operation.
- Durability: Manufactured from high-grade chrome steel for both rings and balls, ensuring long service life and reliable performance.
7011 CE/P4ADBA Bearing Typical Application Areas
This precision duplex bearing set is ideally suited for high-performance applications, including:
- Machine Tool Spindles (High-speed milling, grinding)
- Precision Gearboxes
- High-Frequency Motors
- Medical and Dental Equipment Spindles
- Aerospace Control Systems
