S7011 CB/HCP4ADBA
Hybrid Ceramic Super Precision Bearings
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Part No.
Part No.
S7011 CB/HCP4ADBA
Basic Information
System of measurement
Metric
Weight
0.8 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
36 mm
Width tolerance
-0.2mm to 0
Contact angle
15 °
Ball & Washer Dimensions
Ball diameter
6.747 mm
Ball quantity
26
Performance
Temperature range
- 30°C to 110 °C
Radial dynamic load rating
5062 lbf
Radial static load rating
4950 lbf
Limiting speed
34 X 1000 rpm
Lubrication
Grease
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
Ceramic
Cage material
Phenolic
Technical Drawings
No drawings available at the moment, will be launched soon
In Stock
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S7011 CB/HCP4ADBA Bearing Product Overview & Core Advantages
The S7011 CB/HCP4ADBA is a precision duplex angular contact ball bearing designed for applications demanding exceptional accuracy and rigidity. This matched set features a back-to-back (DB) arrangement with an extra light preload (Class A), ensuring high running accuracy and minimal axial and radial runout. Its construction, utilizing ceramic balls and a phenolic cage, is optimized for high-speed operation and superior performance under combined radial and axial loads. The sealed design with factory-applied grease offers reliable, long-term operation in demanding environments.
S7011 CB/HCP4ADBA Bearing Model Code Explained, Specifications & Naming Convention
| Suffix Code | Technical Meaning |
|---|---|
| CB | Specific internal clearance and preload for a universal (CB) type matched set. |
| HC | Indicates the use of Hybrid Ceramic balls (ceramic balls with steel rings). |
| P4A | Denotes a high-precision tolerance class (equivalent to ABEC 7 / ISO P4), with additional running accuracy requirements. |
| DB | Specifies the Duplex Back-to-Back mounting arrangement of the two bearings in the set. |
| A | Indicates the Extra Light Preload applied to the matched set. |
S7011 CB/HCP4ADBA Bearing Structural Features & Performance Benefits
- High Rigidity and Stability: The duplex back-to-back (DB) arrangement provides a wide effective spread of the load centers, resulting in a very rigid bearing system that can withstand overturning moments, making it ideal for precision spindles.
- Superior High-Speed Performance: The combination of low-density ceramic balls reduces centrifugal force and the lightweight phenolic resin cage ensures stable operation at the high limiting speed of 34,000 rpm.
- Extended Service Life & Reduced Heat Generation: Hybrid ceramic construction offers excellent wear resistance and, due to the non-conductive nature of the balls, can mitigate electrical arcing damage. This leads to lower operating temperatures and longer bearing life.
- Precision and Accuracy: Manufactured to P4A tolerance class with a controlled 15° contact angle and Class A preload, this bearing set delivers exceptional running accuracy and minimal deflection under load.
- Ready-to-Install & Sealed: The bearings are pre-lubricated with grease and feature integral seals, protecting against contamination and providing a maintenance-free solution within the specified temperature range.
S7011 CB/HCP4ADBA Bearing Typical Application Areas
- High-Speed Machine Tool Spindles (e.g., for milling, grinding, and drilling)
- Precision CNC Machining Centers
- High-Frequency Motors and Spindles
- Dental and Medical Handpiece Drives
- Aerospace Instrumentation and Gyroscopes
- High-Performance Pumps and Compressors
