S7011 CD/P4ATBTB
Sealed Super Precision Angular Contact Ball Bearings
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Part No.
Part No.
S7011 CD/P4ATBTB
Basic Information
System of measurement
Metric
Weight
1.15 kg
Tolerance class
P4A
Seal type
Sealed
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
46 X 1000 rpm
Lubrication
Grease
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
In Stock
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S7011 CD/P4ATBTB Bearing Product Overview & Core Advantages
The S7011 CD/P4ATBTB is a high-precision, triplex matched set of angular contact ball bearings configured in a Back-to-Back (TBT) arrangement. Engineered for ultimate performance, this set is designed to handle combined loads (radial and axial) simultaneously while providing exceptional system rigidity and rotational accuracy. Its P4A tolerance class and light preload (Class B) make it ideal for applications demanding high-speed operation, precise positioning, and long-term reliability in compact spaces.
S7011 CD/P4ATBTB Bearing Model Code Explained, Specifications & Naming Convention
| Code Segment | Technical Meaning |
|---|---|
| S7011 | Basic bearing designation, indicating a 55 mm bore, 90 mm OD, and 54 mm width. |
| C | 15° contact angle, optimized for high axial load capacity. |
| D | Specifies a light preload (Class B) for reduced friction and optimal high-speed performance. |
| P4A | Indicates ultra-high precision tolerance class, ensuring minimal runout and superior running accuracy. |
| TBT | Denotes a Triplex Back-to-Back matched set (3 bearings), providing maximum moment stiffness and stability. |
S7011 CD/P4ATBTB Bearing Structural Features & Performance Benefits
- Exceptional Rigidity and Moment Load Capacity: The triplex back-to-back (TBT) arrangement creates a highly rigid bearing system capable of withstanding significant moment loads and complex combined loads, making it exceptionally stable under demanding conditions.
- Optimized for High-Speed Operation: The combination of a phenolic cage, 15° contact angle, and light preload minimizes friction and centrifugal forces, enabling a high limiting speed of 46,000 rpm.
- High-Precision Performance: Manufactured to P4A tolerance standards with tight dimensional control on bore, OD, and width, this bearing set guarantees precise shaft positioning and smooth, quiet operation.
- Sealed and Pre-Lubricated for Long Life: As a sealed unit with factory-applied grease lubrication, it is protected from contamination and is ready for immediate use, offering a maintenance-free solution within its specified temperature range.
S7011 CD/P4ATBTB Bearing Typical Application Areas
This precision bearing set is ideally suited for high-performance machinery requiring superior rigidity and speed. Key applications include:
- Machine Tool Spindles: High-speed milling, grinding, and turning centers.
- Precision Gearboxes: Especially in robotics and aerospace actuation systems.
- High-Frequency Motors and Spindles: Where minimal runout and high rotational accuracy are critical.
- Medical and Laboratory Equipment: Centrifuges and high-speed scanners.
