7011 CD/P4ATBTB
7000 Series Super Precision Angular Contact Ball Bearings
Image may differ from product. See technical specification for details.
Part No.
Part No.
7011 CD/P4ATBTB
Basic Information
System of measurement
Metric
Weight
1.13 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
54 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
19170 lbf
Radial static load rating
22050 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Lubricated
Matched arrangement
Triplex Back-to-Back (TBT)
Number of bearings in matched set
3
Universal matching bearing
No (Standard)
Preload
Light / Class B
Materials
Ring material
Chrome Steel
Ball material
Chrome Steel
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
Price:
$ 275.42
/ each
In Stock
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7011 CD/P4ATBTB Bearing Product Overview & Core Advantages
The 7011 CD/P4ATBTB is a precision angular contact ball bearing configured as a triplex back-to-back (TBT) matched set. Engineered for applications demanding exceptional rotational accuracy and rigidity, this pre-loaded assembly is designed to handle combined radial and axial loads simultaneously. Manufactured to the stringent P4A tolerance class, it delivers superior running accuracy and is pre-lubricated for immediate installation and operation. Its compact, matched design makes it an ideal solution for high-precision, high-rigidity spindles and other critical machinery components.
7011 CD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CD | Indicates a 15° contact angle and specific internal design optimized for high rigidity and speed. |
| P4A | Denotes a high-precision tolerance class with enhanced running accuracy requirements beyond standard P4. |
| TBT | Specifies a Triplex Back-to-Back matched arrangement of three bearings, providing maximum rigidity and moment load capacity. |
7011 CD/P4ATBTB Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Load Capacity: The triplex back-to-back (TBT) arrangement creates a highly rigid support system capable of withstanding heavy combined loads and significant moment loads, making it ideal for demanding applications.
- High-Speed Performance: The phenolic cage offers low weight and excellent performance at high rotational speeds, contributing to the bearing's limiting speed of 34,000 rpm. The 15° contact angle further optimizes the balance between axial load capacity and speed.
- Precision Operation: Manufactured to P4A tolerance class with tight dimensional control on bore, outside diameter, and width, ensuring minimal runout and vibration for superior performance in precision machinery.
- Optimized Preload: The set is supplied with a Light (Class B) preload, which minimizes axial and radial play, enhances system stiffness, and ensures precise shaft positioning without excessive friction or heat generation.
7011 CD/P4ATBTB Bearing Typical Application Areas
This precision matched bearing set is typically employed in high-performance applications where accuracy, speed, and rigidity are paramount. Key sectors include:
- Machine Tool Spindles: For high-speed milling, grinding, and turning centers.
- Precision Spindles: In PCB drilling, semiconductor manufacturing, and other high-accuracy processes.
- High-Frequency Motors: Where low vibration and high rotational accuracy are required.
- Medical and Aerospace Equipment: For critical rotating assemblies demanding reliability and precision.
