7011 CD/P4ADFC
7000 Series Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
7011 CD/P4ADFC
Basic Information
System of measurement
Metric
Weight
0.76 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
11.112 mm
Ball quantity
18
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
14332 lbf
Radial static load rating
14738 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Duplex Face-to-Face (DF)
Number of bearings in matched set
2
Universal matching bearing
No (Standard)
Preload
Moderate / Class C
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 CD/P4ADFC Bearing Product Overview & Core Advantages
The 7011 CD/P4ADFC is a precision angular contact ball bearing designed for demanding applications requiring exceptional rotational accuracy and rigidity. This duplex face-to-face (DF) matched set is preloaded to Moderate / Class C standards, delivering superior system stability and resistance to complex combined loads. Manufactured to P4A tolerance class, it ensures minimal runout and is ideally suited for high-precision, high-reliability machinery where uncompromising performance is critical.
7011 CD/P4ADFC Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a duplex face-to-face (DF) arrangement. This configuration provides high rigidity and is effective in withstanding overturning moments. |
| P4A | Specifies a high-precision tolerance class with enhanced running accuracy requirements, surpassing ABEC 7 (P4) standards. |
| DF | Explicitly denotes the Duplex Face-to-Face mounting of the two bearings in the set. |
| C | Specifies a Moderate preload applied to the bearing set, optimizing stiffness for a wide range of operational conditions. |
7011 CD/P4ADFC Bearing Structural Features & Performance Benefits
- High Rigidity & System Stability: The duplex face-to-face (DF) arrangement and moderate preload (Class C) work in tandem to create an exceptionally rigid bearing system. This design effectively counters deflection under heavy combined loads (radial and axial), ensuring precise shaft positioning and minimizing operational vibration.
- Superior Load Capacity: With a 15° contact angle and a robust design featuring chrome steel rings and balls, this bearing is engineered to handle significant radial and bidirectional axial loads simultaneously.
- Optimized High-Speed Performance: The lightweight phenolic cage reduces centrifugal forces, contributing to a high limiting speed of 34,000 rpm. This makes the bearing suitable for high-speed spindles and other rapid-rotation applications.
- Precision Engineering: Adherence to the P4A tolerance class and tight dimensional tolerances on the bore diameter (55 mm), outside diameter (90 mm), and width (36 mm) guarantees consistent, high-accuracy performance.
7011 CD/P4ADFC Bearing Typical Application Areas
This bearing is ideally deployed in high-performance machinery requiring utmost precision and rigidity, including:
- Machine Tool Spindles (e.g., for milling, grinding, and turning centers)
- High-Frequency Machining Centers
- Precision Grinding Spindles
- High-Speed Pumps and Compressors
- Other critical applications in the aerospace and semiconductor manufacturing industries.
